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1 multiple-unit locomotive
электровоз, работающий по системе многих единицEnglish-Russian big polytechnic dictionary > multiple-unit locomotive
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2 multiple unit locomotive
Универсальный англо-русский словарь > multiple unit locomotive
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3 multiple-unit locomotive
1) Техника: электровоз, работающий по системе многих единиц2) Железнодорожный термин: многосекционный локомотив, управление локомотивами по системе многих единицУниверсальный англо-русский словарь > multiple-unit locomotive
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4 multiple-unit locomotive
электровоз, работающий по системе многих единицАнгло русский политехнический словарь > multiple-unit locomotive
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5 multiple-unit locomotive
Англо-русский железнодорожный словарь > multiple-unit locomotive
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6 multiple-unit bogie locomotive
Железнодорожный термин: электровоз на тележках с управлением по системе многих единицУниверсальный англо-русский словарь > multiple-unit bogie locomotive
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7 multiple-unit diesel locomotive
Железнодорожный термин: сочленённый тепловозУниверсальный англо-русский словарь > multiple-unit diesel locomotive
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8 multiple-unit bogie locomotive
Англо-русский железнодорожный словарь > multiple-unit bogie locomotive
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9 multiple-unit diesel locomotive
Англо-русский железнодорожный словарь > multiple-unit diesel locomotive
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10 locomotive
1. n локомотив2. n шутл. ногиmultiple-unit locomotive — электровоз, работающий по системе многих единиц
3. a движущий4. a движущийся5. a шутл. помешанный на путешествиях6. a способный стимулировать или ускорить экономический ростlocomotive economies — страны, быстро растущие в экономическом отношении
7. a двигательный8. a локомотивный -
11 Sprague, Frank Julian
[br]b. 25 July 1857 Milford, Connecticut, USAd. 25 October 1934 New York, USA[br]American electrical engineer and inventor, a leading innovator in electric propulsion systems for urban transport.[br]Graduating from the United States Naval Academy, Annapolis, in 1878, Sprague served at sea and with various shore establishments. In 1883 he resigned from the Navy and obtained employment with the Edison Company; but being convinced that the use of electricity for motive power was as important as that for illumination, in 1884 he founded the Sprague Electric Railway and Motor Company. Sprague began to develop reliable and efficient motors in large sizes, marketing 15 hp (11 kW) examples by 1885. He devised the method of collecting current by using a wooden, spring-loaded rod to press a roller against the underside of an overhead wire. The installation by Sprague in 1888 of a street tramway on a large scale in Richmond, Virginia, was to become the prototype of the universally adopted trolley system with overhead conductor and the beginning of commercial electric traction. Following the success of the Richmond tramway the company equipped sixty-seven other railways before its merger with Edison General Electric in 1890. The Sprague traction motor supported on the axle of electric streetcars and flexibly mounted to the bogie set a pattern that was widely adopted for many years.Encouraged by successful experiments with multiple-sheave electric elevators, the Sprague Elevator Company was formed and installed the first set of high-speed passenger cars in 1893–4. These effectively displaced hydraulic elevators in larger buildings. From experience with control systems for these, he developed his system of multiple-unit control for electric trains, which other engineers had considered impracticable. In Sprague's system, a master controller situated in the driver's cab operated electrically at a distance the contactors and reversers which controlled the motors distributed down the train. After years of experiment, Sprague's multiple-unit control was put into use for the first time in 1898 by the Chicago South Side Elevated Railway: within fifteen years multiple-unit operation was used worldwide.[br]Principal Honours and DistinctionsPresident, American Institute of Electrical Engineers 1892–3. Franklin Institute Elliot Cresson Medal 1904, Franklin Medal 1921. American Institute of Electrical Engineers Edison Medal 1910.Bibliography1888, "The solution of municipal rapid transit", Trans. AIEE 5:352–98. See "The multiple unit system for electric railways", Cassiers Magazine, (1899) London, repub. 1960, 439–460.1934, "Digging in “The Mines of the Motor”", Electrical Engineering 53, New York: 695–706 (a short autobiography).Further ReadingLionel Calisch, 1913, Electric Traction, London: The Locomotive Publishing Co., Ch. 6 (for a near-contemporary view of Sprague's multiple-unit control).D.C.Jackson, 1934, "Frank Julian Sprague", Scientific Monthly 57:431–41.H.C.Passer, 1952, "Frank Julian Sprague: father of electric traction", in Men of Business, ed. W. Miller, Cambridge, Mass., pp. 212–37 (a reliable account).——1953, The Electrical Manufacturers: 1875–1900, Cambridge, Mass. P.Ransome-Wallis (ed.), 1959, The Concise Encyclopaedia of World RailwayLocomotives, London: Hutchinson, p. 143..John Marshall, 1978, A Biographical Dictionary of Railway Engineers, Newton Abbot: David \& Charles.GW / PJGR -
12 train
3) цепь; цепочка5) последовательно расположенное оборудование, (производственная) линия6) агрегат из последовательных элементов (колонн, фильтров)10) обучать; инструктировать11) тренировать ( изделия)•-
accommodation train
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aerodynamic train
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alternating current electric train
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ambulance train
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arriving train
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assorted train
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ballast train
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block train
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blooming train
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breakdown train
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bridge construction train
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cabooseless train
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calender train
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capacity-filled train
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change-gear train
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clock train
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cogging roll train
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combustion train
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construction train
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container train
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continuous looping rod mill train
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crewless train
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day train
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diesel-multiple unit train
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differential change gear train
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direct current electric train
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direct train
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disabled train
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double-heading train
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down train
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electric multiple-unit train
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emergency train
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erection train
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even train
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express train
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extra train
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fast train
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feed change gear train
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ferry train
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finishing mill train
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fire train
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fixed-consist train
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flexible conveyor train
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freight train
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generation change gear train
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girder mill train
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heavy-tonnage train
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heavy train
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high-speed train
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incoming train
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index change gear train
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ink train
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intercity train
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international train
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local train
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locomotive-hauled train
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long train
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long-distance train
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looping mill train
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maglev train
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mail train
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main-line train
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mechanical refrigerated train
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mill train
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mold train
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multicar train
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multiple-unit train
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night train
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odd train
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opposing train
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optical train
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outbound train
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passenger train
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pickup train
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postal train
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power train
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processing train
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pulse train
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rail mill train
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rail-grinding train
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refrigerated train
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regular service train
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regular train
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repetition pulse train
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revenue-earning train
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reversing blooming mill train
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reversing plate mill train
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rod mill rolling train
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roll mills train
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roller train
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rolling mill train
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shuttle train
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small-section mill train
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spur planetary gear train
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staggered rolling train
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stopping train
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suburban train
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switch train
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talus train
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tank train
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test train
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through train
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track-laying train
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track-renewal train
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train of impulses
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transfer train
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tube-rolling train
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two-high reversing mill train
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two-high universal mill train
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unit train
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up train
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valley train
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variable pulsewidth train
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wave train
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work train
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wreck train -
13 Bulleid, Oliver Vaughan Snell
[br]b. 19 September 1882 Invercargill, New Zealandd. 25 April 1970 Malta[br]New Zealand (naturalized British) locomotive engineer noted for original experimental work in the 1940s and 1950s.[br]Bulleid's father died in 1889 and mother and son returned to the UK from New Zealand; Bulleid himself became a premium apprentice under H.A. Ivatt at Doncaster Works, Great Northern Railway (GNR). After working in France and for the Board of Trade, Bulleid returned to the GNR in 1912 as Personal Assistant to Chief Mechanical Engineer H.N. Gresley. After a break for war service, he returned as Assistant to Gresley on the latter's appointment as Chief Mechanical Engineer of the London \& North Eastern Railway in 1923. He was closely associated with Gresley during the late 1920s and early 1930s.In 1937 Bulleid was appointed Chief Mechanical Engineer of the Southern Railway (SR). Concentration of resources on electrification had left the Southern short of up-to-date steam locomotives, which Bulleid proceeded to provide. His first design, the "Merchant Navy" class 4–6– 2, appeared in 1941 with chain-driven valve gear enclosed in an oil-bath, and other novel features. A powerful "austerity" 0−6−0 appeared in 1942, shorn of all inessentials to meet wartime conditions, and a mixed-traffic 4−6−2 in 1945. All were largely successful.Under Bulleid's supervision, three large, mixed-traffic, electric locomotives were built for the Southern's 660 volt DC system and incorporated flywheel-driven generators to overcome the problem of interruptions in the live rail. Three main-line diesel-electric locomotives were completed after nationalization of the SR in 1948. All were carried on bogies, as was Bulleid's last steam locomotive design for the SR, the "Leader" class 0−6−6−0 originally intended to meet a requirement for a large, passenger tank locomotive. The first was completed after nationalization of the SR, but the project never went beyond trials. Marginally more successful was a double-deck, electric, suburban, multiple-unit train completed in 1949, with alternate high and low compartments to increase train capacity but not length. The main disadvantage was the slow entry and exit by passengers, and the type was not perpetuated, although the prototype train ran in service until 1971.In 1951 Bulleid moved to Coras Iompair Éireann, the Irish national transport undertaking, as Chief Mechanical Engineer. There he initiated a large-scale plan for dieselization of the railway system in 1953, the first such plan in the British Isles. Simultaneously he developed, with limited success, a steam locomotive intended to burn peat briquettes: to burn peat, the only native fuel, had been a long-unfulfilled ambition of railway engineers in Ireland. Bulleid retired in 1958.[br]BibliographyBulleid took out six patents between 1941 and 1956, covering inter alia valve gear, boilers, brake apparatus and wagon underframes.Further ReadingH.A.V.Bulleid, 1977, Bulleid of the Southern, Shepperton: Ian Allan (a good biography written by the subject's son).C.Fryer, 1990, Experiments with Steam, Wellingborough: Patrick Stephens (provides details of the austerity 0–6–0, the "Leader" locomotive and the peat-burning locomotive: see Chs 19, 20 and 21 respectively).PJGRBiographical history of technology > Bulleid, Oliver Vaughan Snell
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14 plant
1) завод; фабрика; предприятие2) установка; агрегат3) электрическая станция, электростанция, ЭС (см. тж
station)4) энергоблок5) цех; отделение; мастерская6) установка сейсмоприёмника в грунте || устанавливать сейсмоприёмник в грунт•-
absorption plant
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absorption refrigerating plant
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accumulator plant
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acetylene compressing plant
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acid recovery acid restoring plant
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acid recovery plant
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adsorption plant
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aerodrome accumulator plant
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agglomeration plant
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air separation plant
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air-cooled refrigerating plant
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aircraft development plant
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aircraft manufacturing plant
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aircraft overhaul plant
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aircraft plant
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aircraft washing plant
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air-storage gas turbine plant
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air-storage power plant
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alkylation plant
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A-plant
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arc-furnace plant
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arc-welding plant
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asphalt plant
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assembly plant
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atomic marine plant
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atomic power plant
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automatic flour handling plant
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auto-shredding plant
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auxiliary gas turbine power plant
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back-pressure heat generation plant
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bakery plant
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baling plant
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basic arc-furnace plant
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basic slag-grinding plant
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batching plant
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batch-weighing plant
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Bessemer plant
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biogas producing plant
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blackout plant
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blast-furnace plant
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blending plant
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bob-tail plant
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boiler plant
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bow-type plant
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box plant
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bread-making plant
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breaking plant
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brick-making plant
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brine refrigerating plant
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bulk plant
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butter-making plant
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by-product coke plant
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by-product recovery plant
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by-products plant
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can-making plant
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canning plant
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captive plant
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car assembly plant
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carbon dioxide refrigerating plant
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carbon plant
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car-repair plant
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casinghead gasoline plant
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casting plant
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CDQ plant
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cell plant
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centralized photovoltaic power plant
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central-mixing plant
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centrifugal refrigerating plant
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centrifuge isotope separation plant
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charge preparation plant
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cheese-making plant
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chemical desalting plant
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chemical separation plant
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circulation degassing plant
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clarification plant
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clay-drying plant
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closed-cycle cryogenic plant
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coal gasification-gas cleaning plant
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coal-cleaning plant
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coal-conveying plant
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coal-fired plant
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coal-injection plant
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coal-liquefaction plant
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coal-preparation plant
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coal-pulverizing plant
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coal-reduction plant
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coal-to-methanol plant
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coal-washing plant
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cogeneration plant
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coke dry-quenching plant
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coke-handling plant
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coke-pitch plant
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coke-quenching plant
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coking plant
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combination topping and cracking plant
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combined heat power plant
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combined photovoltaic-deolian electric plant
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combined-cycle plant
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combined-cycle steam plant
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combiner plant
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compressor plant
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concentration plant
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concrete product plant
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concrete-mixing plant
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concreting plant
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condensate liquid recovery plant
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condensate purification plant
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condensing plant
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confectionary producing plant
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confectionary plant
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constant-head plant
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contactor centrifuge acid treating plant
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continuous-casting plant
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conventional power plant
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converter plant
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cooling plant
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copper-smelting plant
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countercurrent ion exchange plant
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CR plant
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crushing plant
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cryogenic freezing plant
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cryogenic power generation plant
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crystal drawing plant
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cutting and shearing plant
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cycle-degassing plant
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cycling plant
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deaerating plant
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degreasing plant
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dendro-thermal power plant
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desalting plant
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desinfection plant
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detinning plant
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dewatering plant
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diesel engine power plant
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direct-expansion refrigerating plant
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disposal plant
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distilling plant
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district-heating plant
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diversion plant
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double-strand plant
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drainage pumping plant
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drop-hammer plant
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dry-process plant
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dual-purpose turbine plant
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dust extraction plant
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dust handling plant
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earth-freezing plant
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earth-moving plant
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EBM plant
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EBR plant
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ECM plant
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edible fat plant
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EDR plant
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effluent treatment plant
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eight-strand plant
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ejector refrigerating plant
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electric pig-iron plant
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electric power plant
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electrical propulsion plant
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electricity distribution plant
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electrochemical machining plant
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electrodialysis plant
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electrodialysis reversal plant
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electrolytic tinning plant
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electron-beam-melting plant
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electron-beam-refining plant
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electrostatic precipitation desalting plant
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engineering plant
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evaporation plant
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extraction plant
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extra-terrestrial power plant
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fabric-dipping plant
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feed milling
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fermentation plant
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filter plant
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finishing plant
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fish processing plant
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fission power plant
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fixed plant
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fixed-head power plant
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flexible manufacturing plant
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flexing generating plant
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floating nuclear power plant
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floating pile-driving plant
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floating power plant
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flotation plant
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flour milling plant
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folding carton plant
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food concentrate plant
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force ventilation plant
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formcoke plant
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fossil-fuel plant
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fractional horsepower refrigerating plant
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fractional ton refrigerating plant
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fragmentation plant
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freezing plant
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fruit-and-vegetable processing plant
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fuel-pulverizing plant
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full-fashioned sweater plant
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full-scale plant
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fume-cleaning plant
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fume-extraction plant
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furniture plant
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fusion power plant
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galvanizing plant
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gas absorption plant
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gas fire extinguishing plant
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gas fractionation plant
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gas liquids plant
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gas plant
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gas turbine power plant
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gas turbine plant
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gas-and-oil-buming power plant
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gas-carburizing plant
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gas-cleaning plant
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gas-compressor plant
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gaseous-diffusion plant
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gas-fired plant
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gas-generator plant
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gasification-based combined cycle plant
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gasifier-combined cycle plant
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gasoline plant
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gas-producer plant
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gas-treating plant
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gas-washing plant
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generating plant
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geothermal power plant
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glass-manufacturing plant
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glass-recycling plant
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grading plant
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graphite plant
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graphite recovery plant
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grease plant
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hardening plant
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H-cycle plant
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heat power plant
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heat pump plant
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heat raising plant
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heat-electric generating plant
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heating and power plant
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heating network plant
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heating plant
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heating-water converter plant
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heavy-water plant
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high-capacity refrigerating plant
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high-head power plant
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H-iron plant
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hot dip filming plant
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hot water peaking boiler plant
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hybrid wind-photovoltaic plant
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hydroelectric power plant
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hydroelectric plant
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hydroelectric pumped storage power plant
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hydro-photovoltaic plant
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ice plant
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incinerator plant
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indicator plant
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industrial power plant
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industrial steam plant
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industrial waste treatment plant
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industrial-scale plant
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in-house printing plant
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intake plant
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integral coal gasification combined cycle plant
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integrated steel plant
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interlocking plant
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intermediate solar plant
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internal combustion power plant
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ion-exchange plant
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ion-exchange softening plant
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iron powder plant
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iron-ore pelletizing plant
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isolated generating plant
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isotope separation plant
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jobbing plant
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Kaldo-steelmaking plant
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Kaldo plant
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killing plant
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laboratory-scale plant
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ladle degassing plant
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ladle-spraying plant
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LD plant
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LDAC oxygen-steelmaking plant
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light plant
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liquefied natural gas plant
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liquefied petroleum gas plant
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liquid freezing plant
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liquor plant
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loading plant
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local plant
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locomobile power plant
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locomotive repair plant
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loop plant
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low-capacity refrigerating plant
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low-head power plant
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lube plant
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machine tool plant
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magnetohydrodynamic power plant
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main propulsion machinery plant
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marine reactor plant
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marine refrigerating plant
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meat packing plant
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meat producing plant
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mechanical air-conditioning plant
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mechanical drive gas turbine plant
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mechanical refrigerating plant
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medium-head power plant
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merchant-coke plant
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metals-recovery plant
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MHD power plant
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midget power plant
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milk plant
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milling plant
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mine-mouth power plant
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mixed pumped-storage plant
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mixing plant
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mobile power plant
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mold degassing plant
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mold hydraulic cleaning plant
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mortar-mixing plant
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muck-shifting plant
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mud-mixing plant
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multiple-unit power plant
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multipurpose sea-water desalination plant
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multistrand plant
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multiunit power plant
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naphtha-treating plant
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natural gasoline plant
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natural gas-sweetening plant
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noncondensing power plant
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nonintegrated steel plant
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nonterrestrial power plant
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nuclear cogeneration plant
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nuclear gas turbine plant
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nuclear heating plant
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nuclear power plant
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nuclear steam power plant
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oil shale retorting plant
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oil-and-gas gathering plant
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oil-burning power plant
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oil-desulfurization plant
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oil-extraction plant
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oil-fired plant
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oil-reclamation plant
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oil-treating plant
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on-line gas plant
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open-coil annealing plant
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open-cycle gas turbine plant
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open-hearth plant
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orbital power plant
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orbital solar power plant
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ore-bedding plant
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ore-blending plant
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ore-breaker plant
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ore-conditioning plant
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ore-dressing plant
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ore-roasting plant
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ore-washing plant
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outdoor-type power plant
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oxidizing plant
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oxygen-converter plant
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ozone plant
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packaged power plant
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packaged refrigerating plant
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packing plant
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paint varnish and lacquer plant
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pallet conveyor mold-type plant
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paperboard plant
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peaking power plant
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peaking boiler plant
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peak-shaving liquefied natural gas plant
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pellet plant
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petroleum chemical plant
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photovoltaic power plant
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physical plant
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pickling plant
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pig-casting plant
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pilot plant
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plating plant
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plywood manufacturing plant
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polymerization plant
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pontoon pile-driving plant
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power plant
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preserving plant
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printing plant
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process gas turbine plant
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processing plant
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Prolerizing plant
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propulsion plant
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public utility power plant
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public-service power plant
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pulverized-coal-fired plant
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pulverizing plant
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pump plant
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pumped-storage plant
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pumping plant
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pumping-generating plant
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quick-freezing plant
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radiant freeze-drying plant
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ready-mix plant
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recovery plant
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reforming plant
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refrigerating plant
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refuse-fired plant
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regasifying plant
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regenerative gas turbine plant
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relift pumping plant
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rendering plant
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retreading plant
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reverse osmosis plant
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rolling plant
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route interlocking plant
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run-of-river plant
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sack filling plant
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salt plant
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sand-preparing plant
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satellite printing plant
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scrap-shredding plant
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screening plant
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sea-water desalting plant
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sedimentation plant
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self-contained rail welding plant
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self-contained refrigerating plant
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self-sufficient plant
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semiclosed-cycle gas turbine plant
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semiunderground plant
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separating plant
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sewage disposal plant
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simple-cycle gas turbine plant
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simulated power plant
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single-pool power plant
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single-strand plant
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single-unit plant
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sinking plant
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sintering plant
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sizing plant
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skimming plant
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slab-producting plant
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slag-expanding plant
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slag-screening plant
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slaughtering and meat processing plant
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slaughtering plant
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sludge filtration plant
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small-size refrigerating plant
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smoke extractor plant
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soap plant
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solar ice plant
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solar plant
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solar power plant
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solar tower plant
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solvent-extraction plant
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split-shaft gas turbine plant
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sputtering plant
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stabilization plant
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stand-alone solar power plant
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standby plant
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stationary gas turbine plant
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stationary refrigerating plant
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steam condensing plant
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steam plant
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steam power plant
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steam-electric-turbine plant
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steaming plant
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steel continuous casting plant
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steel plant
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storage plant
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stream degassing plant
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stripping plant
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sugar refining plant
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sulfur recovery plant
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sunken-type plant
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superposed plant
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supplementary fired combined cycle plant
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supplementary heating plant
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sweater knitting plant
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tap-degassing plant
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tar-boiling plant
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tea plant
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television plant
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tertiary plant
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thermal power plant
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thermal plant
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thermodynamic solar power plant
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thermoelectric refrigerating plant
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tidal power plant
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tiger topping plant
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tinning plant
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tin-refining plant
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tin-smelting plant
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tonnage oxygen plant
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top-blown oxygen vessel plant
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topping plant
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tower-type plant
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train washing plant
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transformer plant
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trash-fired power plant
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traveling pneumatic grain-discharging plant
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treatment plant
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tritium removal plant
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turbine plant
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turbo-refrigerating plant
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two-axes focusing solar plant
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two-shaft plant
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ultrafiltration concentration plant
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undercar power plant
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underground nuclear power plant
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underwater nuclear power plant
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unit refrigerating plant
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uranium enrichment plant
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vacuum casting plant
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vacuum degassing plant
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vacuum dezincing plant
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vacuum gas turbine plant
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vacuum metallothermic plant
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vacuum molding plant
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vacuum-decarburization plant
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variable-head power plant
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variable-load power plant
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vertical plant
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vulcanizing plant
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washing plant
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waste disposal plant
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waste-to-energy cogeneration plant
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waste-to-energy plant
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water demineralization plant
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water softening plant
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water treatment plant
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water-cooling plant
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waterpower plant
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wave energy plant
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wax plant
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wet-process plant
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wind-mill electric generating plant
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wire-drawing plant
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year-round air-conditioning plant
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zero-discharge plant
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zinc ore roasting plant
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zinc-smelting plant -
15 Hamilton, Harold Lee (Hal)
[br]b. 14 June 1890 Little Shasta, California, USAd. 3 May 1969 California, USA[br]American pioneer of diesel rail traction.[br]Orphaned as a child, Hamilton went to work for Southern Pacific Railroad in his teens, and then worked for several other companies. In his spare time he learned mathematics and physics from a retired professor. In 1911 he joined the White Motor Company, makers of road motor vehicles in Denver, Colorado, where he had gone to recuperate from malaria. He remained there until 1922, apart from an eighteenth-month break for war service.Upon his return from war service, Hamilton found White selling petrol-engined railbuses with mechanical transmission, based on road vehicles, to railways. He noted that they were not robust enough and that the success of petrol railcars with electric transmission, built by General Electric since 1906, was limited as they were complex to drive and maintain. In 1922 Hamilton formed, and became President of, the Electro- Motive Engineering Corporation (later Electro-Motive Corporation) to design and produce petrol-electric rail cars. Needing an engine larger than those used in road vehicles, yet lighter and faster than marine engines, he approached the Win ton Engine Company to develop a suitable engine; in addition, General Electric provided electric transmission with a simplified control system. Using these components, Hamilton arranged for his petrol-electric railcars to be built by the St Louis Car Company, with the first being completed in 1924. It was the beginning of a highly successful series. Fuel costs were lower than for steam trains and initial costs were kept down by using standardized vehicles instead of designing for individual railways. Maintenance costs were minimized because Electro-Motive kept stocks of spare parts and supplied replacement units when necessary. As more powerful, 800 hp (600 kW) railcars were produced, railways tended to use them to haul trailer vehicles, although that practice reduced the fuel saving. By the end of the decade Electro-Motive needed engines more powerful still and therefore had to use cheap fuel. Diesel engines of the period, such as those that Winton had made for some years, were too heavy in relation to their power, and too slow and sluggish for rail use. Their fuel-injection system was erratic and insufficiently robust and Hamilton concluded that a separate injector was needed for each cylinder.In 1930 Electro-Motive Corporation and Winton were acquired by General Motors in pursuance of their aim to develop a diesel engine suitable for rail traction, with the use of unit fuel injectors; Hamilton retained his position as President. At this time, industrial depression had combined with road and air competition to undermine railway-passenger business, and Ralph Budd, President of the Chicago, Burlington \& Quincy Railroad, thought that traffic could be recovered by way of high-speed, luxury motor trains; hence the Pioneer Zephyr was built for the Burlington. This comprised a 600 hp (450 kW), lightweight, two-stroke, diesel engine developed by General Motors (model 201 A), with electric transmission, that powered a streamlined train of three articulated coaches. This train demonstrated its powers on 26 May 1934 by running non-stop from Denver to Chicago, a distance of 1,015 miles (1,635 km), in 13 hours and 6 minutes, when the fastest steam schedule was 26 hours. Hamilton and Budd were among those on board the train, and it ushered in an era of high-speed diesel trains in the USA. By then Hamilton, with General Motors backing, was planning to use the lightweight engine to power diesel-electric locomotives. Their layout was derived not from steam locomotives, but from the standard American boxcar. The power plant was mounted within the body and powered the bogies, and driver's cabs were at each end. Two 900 hp (670 kW) engines were mounted in a single car to become an 1,800 hp (l,340 kW) locomotive, which could be operated in multiple by a single driver to form a 3,600 hp (2,680 kW) locomotive. To keep costs down, standard locomotives could be mass-produced rather than needing individual designs for each railway, as with steam locomotives. Two units of this type were completed in 1935 and sent on trial throughout much of the USA. They were able to match steam locomotive performance, with considerable economies: fuel costs alone were halved and there was much less wear on the track. In the same year, Electro-Motive began manufacturing diesel-electrie locomotives at La Grange, Illinois, with design modifications: the driver was placed high up above a projecting nose, which improved visibility and provided protection in the event of collision on unguarded level crossings; six-wheeled bogies were introduced, to reduce axle loading and improve stability. The first production passenger locomotives emerged from La Grange in 1937, and by early 1939 seventy units were in service. Meanwhile, improved engines had been developed and were being made at La Grange, and late in 1939 a prototype, four-unit, 5,400 hp (4,000 kW) diesel-electric locomotive for freight trains was produced and sent out on test from coast to coast; production versions appeared late in 1940. After an interval from 1941 to 1943, when Electro-Motive produced diesel engines for military and naval use, locomotive production resumed in quantity in 1944, and within a few years diesel power replaced steam on most railways in the USA.Hal Hamilton remained President of Electro-Motive Corporation until 1942, when it became a division of General Motors, of which he became Vice-President.[br]Further ReadingP.M.Reck, 1948, On Time: The History of the Electro-Motive Division of General Motors Corporation, La Grange, Ill.: General Motors (describes Hamilton's career).PJGRBiographical history of technology > Hamilton, Harold Lee (Hal)
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