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41 precision casting process
துல்லிய வார்ப்பட முறை -
42 precision tool
துல்லியக் கருவி -
43 double precision
இரட்டிப்பு பிறழாத் துல்லியம் -
44 radar precision approach
Iவான ஊர்திப் போக்குவரத்து நெறிப்படுத்தி ரேடார்IIவான ஊர்திப் போக்குவரத்து நெறிப்படுத்தி ரேடார் -
45 точное машиностроение
Большой англо-русский и русско-английский словарь > точное машиностроение
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46 PEP
1) Биология: phosphoenole pyruvate2) Медицина: phosphoenolpyruvate, preejection period (период изоволюмического сокращения), Public Education Program, постконтактная (химио)профилактика (post-exposure (chemo)prophylaxis)3) Американизм: Peace, Economy, Prosperity4) Военный термин: Photographic Exploitation Products, Post Event Plan, Power Entry Panel, Production Engineering and Planning, Productivity Enhancement Program, performance evaluation and prediction, performance evaluation program, personnel exchange program, physical education program, plant equipment package, platform electronic package, platform evaluation program, point expanding projectile, power evaluation program, power extension plant, proficiency examination program, program element plan, program evaluation procedure, program evaluation process, promotion evaluation pattern5) Техника: pentaethylphenol, performance enhancement program, peripheral entry panel, positron, electron, proton, power extension package, producibility engineering planning, productivity enhancement package, programmable entry panel, prosphoenole pyruvate, proton-electron-positron storage ring, prototyping, evaluation and programming system6) Сельское хозяйство: Poultry & Egg Promotion, Poultry Expansion Program7) Шутливое выражение: Python Enhancement Proposal8) Химия: Physical Equivalent Practice9) Строительство: Promotion of European Passive Houses10) Бухгалтерия: Productivity Efficiency And Profits11) Финансы: модель привязки валютных курсов стран-экспортеров к стоимости экспортируемого товара (Peg the Exprot Price, предложена в начале 2000-х годов Джеффри Франкелем (http://ksghome.harvard.edu/\PEPjfrankel/PEP%20Index-JPM.pdf)), политически значимое лицо (politically exposed person)12) Телекоммуникации: Partitioned Emulation Program, Policy Enforcement Point13) Сокращение: Peak Envelope Power, Political and Economic Planning, Post Exposure Prophylaxis (antibiotic treatment after exposure to biohazard), Productivity Enhancement Program (USA), Productivity Enhancement Project, productibility, engineering, planning, planar epitaxial passivated (transistor), Paternalistic, Economic, Participative (The three main motivational styles found in organizations and management.), Politically Exposed Person14) Университет: Personal Elective Project, Personalized Education Plan, Pharmacology Education Partnership, Pre Engineering Program, Professional Experience Program, Project Exploration Program, Publications, Education, And Presentations15) Физика: Pauli Exclusion Principle16) Физиология: Positive Expiratory Pressure, Post Exposure Prophylaxis17) Электроника: Parent And Educator Partnership, Providing For Exceptional Potential18) Вычислительная техника: Polymer Electronic Printing, методика оценки программ, Personal Employee Portal (IBM), Personal Exam Prep (MS, ATEC), Python Enhancement Proposal (Python), Packetized Ensemble Protocol (Telebit)19) Биохимия: Primate Equilibrium Platform20) Банковское дело: программа льготной продажи акций служащим компании (personal equity plan)21) Воздухоплавание: Propulsion and Energetics Panel22) Фирменный знак: Precision Engine Parts, Professional Event Photography23) Экология: Precipitation Enhancement Project, phosphorus elimination plant25) Деловая лексика: Profit Enhancement Process, программа продажи акций служащим компании (personal equity plan)26) Глоссарий компании Сахалин Энерджи: Performance Enhancement Plan27) Образование: Parent Educator Partnership, Parents Educating Parents, Parents Educators And Publishers, Personal Education Plan, Personal Enrichment Program, Potentially English Proficient, Primary Enrichment Program, Public Education Partnership, Pupil Esteem Program28) Инвестиции: personal equity plan29) Сетевые технологии: Packet Encoding Protocol, протокол пакетного кодирования30) ЕБРР: private equity plan31) Автоматика: Precision Engineering Program32) Контроль качества: product excellence program33) Сахалин Р: Project Execution Plan34) Расширение файла: Packet Exchange Protocol, Programme Evaluation Procedure35) Эволюция: ПЭП, популярная эволюционная психология, popular evolutionary psychology36) Электротехника: pulse effective power37) Высокочастотная электроника: primary entry point38) Должность: Personal Education Partner, Personal Efficiency Program, Positive Enhanced Performance, Professional Employer Panel39) Чат: People Enjoying People, Pester Every Person40) NYSE. Pepsico, Inc.41) НАСА: Propellant Equilibrium Program42) Клинические исследования: primary endpoint (основная конечная точка) -
47 pep
1) Биология: phosphoenole pyruvate2) Медицина: phosphoenolpyruvate, preejection period (период изоволюмического сокращения), Public Education Program, постконтактная (химио)профилактика (post-exposure (chemo)prophylaxis)3) Американизм: Peace, Economy, Prosperity4) Военный термин: Photographic Exploitation Products, Post Event Plan, Power Entry Panel, Production Engineering and Planning, Productivity Enhancement Program, performance evaluation and prediction, performance evaluation program, personnel exchange program, physical education program, plant equipment package, platform electronic package, platform evaluation program, point expanding projectile, power evaluation program, power extension plant, proficiency examination program, program element plan, program evaluation procedure, program evaluation process, promotion evaluation pattern5) Техника: pentaethylphenol, performance enhancement program, peripheral entry panel, positron, electron, proton, power extension package, producibility engineering planning, productivity enhancement package, programmable entry panel, prosphoenole pyruvate, proton-electron-positron storage ring, prototyping, evaluation and programming system6) Сельское хозяйство: Poultry & Egg Promotion, Poultry Expansion Program7) Шутливое выражение: Python Enhancement Proposal8) Химия: Physical Equivalent Practice9) Строительство: Promotion of European Passive Houses10) Бухгалтерия: Productivity Efficiency And Profits11) Финансы: модель привязки валютных курсов стран-экспортеров к стоимости экспортируемого товара (Peg the Exprot Price, предложена в начале 2000-х годов Джеффри Франкелем (http://ksghome.harvard.edu/\PEPjfrankel/PEP%20Index-JPM.pdf)), политически значимое лицо (politically exposed person)12) Телекоммуникации: Partitioned Emulation Program, Policy Enforcement Point13) Сокращение: Peak Envelope Power, Political and Economic Planning, Post Exposure Prophylaxis (antibiotic treatment after exposure to biohazard), Productivity Enhancement Program (USA), Productivity Enhancement Project, productibility, engineering, planning, planar epitaxial passivated (transistor), Paternalistic, Economic, Participative (The three main motivational styles found in organizations and management.), Politically Exposed Person14) Университет: Personal Elective Project, Personalized Education Plan, Pharmacology Education Partnership, Pre Engineering Program, Professional Experience Program, Project Exploration Program, Publications, Education, And Presentations15) Физика: Pauli Exclusion Principle16) Физиология: Positive Expiratory Pressure, Post Exposure Prophylaxis17) Электроника: Parent And Educator Partnership, Providing For Exceptional Potential18) Вычислительная техника: Polymer Electronic Printing, методика оценки программ, Personal Employee Portal (IBM), Personal Exam Prep (MS, ATEC), Python Enhancement Proposal (Python), Packetized Ensemble Protocol (Telebit)19) Биохимия: Primate Equilibrium Platform20) Банковское дело: программа льготной продажи акций служащим компании (personal equity plan)21) Воздухоплавание: Propulsion and Energetics Panel22) Фирменный знак: Precision Engine Parts, Professional Event Photography23) Экология: Precipitation Enhancement Project, phosphorus elimination plant25) Деловая лексика: Profit Enhancement Process, программа продажи акций служащим компании (personal equity plan)26) Глоссарий компании Сахалин Энерджи: Performance Enhancement Plan27) Образование: Parent Educator Partnership, Parents Educating Parents, Parents Educators And Publishers, Personal Education Plan, Personal Enrichment Program, Potentially English Proficient, Primary Enrichment Program, Public Education Partnership, Pupil Esteem Program28) Инвестиции: personal equity plan29) Сетевые технологии: Packet Encoding Protocol, протокол пакетного кодирования30) ЕБРР: private equity plan31) Автоматика: Precision Engineering Program32) Контроль качества: product excellence program33) Сахалин Р: Project Execution Plan34) Расширение файла: Packet Exchange Protocol, Programme Evaluation Procedure35) Эволюция: ПЭП, популярная эволюционная психология, popular evolutionary psychology36) Электротехника: pulse effective power37) Высокочастотная электроника: primary entry point38) Должность: Personal Education Partner, Personal Efficiency Program, Positive Enhanced Performance, Professional Employer Panel39) Чат: People Enjoying People, Pester Every Person40) NYSE. Pepsico, Inc.41) НАСА: Propellant Equilibrium Program42) Клинические исследования: primary endpoint (основная конечная точка) -
48 technology
1) технология; технические приёмы2) техника; технические средства3) технические знания; технический опыт, систематизированный технический опыт•- actuator technology
- advanced manufacturing technology
- aggregate technology
- AI-based robotics technology
- assembly technology
- audiovisual technology
- automatic eddy current technology
- automation technology
- automative technology
- CAD/CAM technology
- CADCAM technology
- CAM technology
- capacitance technology
- capacitance-sensing technology
- CBN grinding technology
- cell manufacturing technology
- CIM-based technology
- CIMIS technologies
- CNC technology
- communication technology
- computer-aided technology
- computer-driven technology
- control technology
- conveyance technologies
- cutoff sawing technology
- cutting edge technology
- cutting machine tool technology
- cutting technology
- cutting tool technology
- digital eddy current technology
- digital imaging technology
- digital technology
- DNC technology
- eddy current technology
- electroheat technology
- electronic technology
- enabling technology
- engineering technology
- enterprise management technology
- fabricating technology
- fast-developing control technology
- field-proven technology
- five-axis technology
- flexible manufacturing technology
- FMS technology
- force-based technology
- framework technology
- gear processing technology
- generative NC technology
- group technology
- image expansion technology
- industrial automation technologies
- information management technology
- information technology
- innovative technology
- insert technology
- inspection technology
- instructional technologies
- instrumentation technology
- knowledge processing technology
- laser strip technology
- laser stripe technology
- laser surface modification technology
- laser technology
- laser-gaging technology
- leading-edge technology
- lighting technology
- locomotive technologies
- machine control technology
- machine tool control technology
- machine tool technology
- machining technology
- mainstream manufacturing technology
- manufacturing technology
- materials technology
- material-specific cutting technology
- mature technology
- measurement technology
- mechanical technology
- mechanical-engineering technology
- microprocessor technology
- moire technology
- monitoring technology
- multiple laser technology
- NC machining technology
- NC technology
- near-term technology
- networking technology
- numerical control process technology
- open system technology
- open systems technology
- pattern-recognition technology
- precision engineering technology
- probing technologies
- process technology
- processing technology
- production technology
- remote control technology
- robot technology
- robotics technology
- RP technology
- saw technology
- sensing technology
- sensor technology
- sheet metal working technology
- silicon integrated-circuit technology
- silicon technology
- solid state technology
- standard-product technologies
- support technology
- surface-mount technology
- swarf-monitoring technology
- telepresence technology
- telerobotic technology
- time study-based technology
- time-of-flight technology
- tried-and-true technology
- turning technology
- ultrasonic technology
- underlying technology
- unmanned turning technology
- up-to-the-minute technology
- vacuum technology
- vision technology
- workstation technologyEnglish-Russian dictionary of mechanical engineering and automation > technology
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49 ICOPE
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50 PERL
1) Общая лексика: hum. сокр. Protein Expression And Recovery Labs2) Военный термин: Passivated Emitter Rear Locally, Pre-positioned Equipment Requirement List, Preliminary Equipment Requirement List3) Сокращение: Pathologically Eclectic Rubbish Lister4) Физиология: Pupils Equally Responsive To Light5) Вычислительная техника: Practical Extraction and Report Language (PERL), practical extraction and report language6) Автоматика: precision engineering research lathe7) Расширение файла: Practical Extraction and Report Language (Unix) -
51 Perl
1) Общая лексика: hum. сокр. Protein Expression And Recovery Labs2) Военный термин: Passivated Emitter Rear Locally, Pre-positioned Equipment Requirement List, Preliminary Equipment Requirement List3) Сокращение: Pathologically Eclectic Rubbish Lister4) Физиология: Pupils Equally Responsive To Light5) Вычислительная техника: Practical Extraction and Report Language (PERL), practical extraction and report language6) Автоматика: precision engineering research lathe7) Расширение файла: Practical Extraction and Report Language (Unix) -
52 perl
1) Общая лексика: hum. сокр. Protein Expression And Recovery Labs2) Военный термин: Passivated Emitter Rear Locally, Pre-positioned Equipment Requirement List, Preliminary Equipment Requirement List3) Сокращение: Pathologically Eclectic Rubbish Lister4) Физиология: Pupils Equally Responsive To Light5) Вычислительная техника: Practical Extraction and Report Language (PERL), practical extraction and report language6) Автоматика: precision engineering research lathe7) Расширение файла: Practical Extraction and Report Language (Unix) -
53 PEP
сокр. от Precision Engineering ProgramEnglish-Russian dictionary of mechanical engineering and automation > PEP
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54 PERL
сокр. от precision engineering research latheпрецизионный токарный станок-стенд; лабораторный прецизионный токарный станокEnglish-Russian dictionary of mechanical engineering and automation > PERL
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55 Renold, Hans
SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering[br]b. 31 July 1852 Aarau, Switzerlandd. 2 May 1943 Grange-over-Sands, Lancashire, England[br]Swiss (naturalized British 1881) mechanical engineer, inventor and pioneer of the precision chain industry.[br]Hans Renold was educated at the cantonal school of his native town and at the Polytechnic in Zurich. He worked in two or three small workshops during the polytechnic vacations and served an apprenticeship of eighteen months in an engineering works at Neuchâtel, Switzerland. After a short period of military service he found employment as a draughtsman in an engineering firm at Saint-Denis, near Paris, from 1871 to 1873. In 1873 Renold moved first to London and then to Manchester as a draughtsman and inspector with a firm of machinery exporters. From 1877 to 1879 he was a partner in his own firm of machine exporters. In 1879 he purchased a small firm in Salford making chain for the textile industry. At about this time J.K.Starley introduced the "safety" bicycle, which, however, lacked a satisfactory drive chain. Renold met this need with the invention of the bush roller chain, which he patented in 1880. The new chain formed the basis of the precision chain industry: the business expanded and new premises were acquired in Brook Street, Manchester, in 1881. In the same year Renold became a naturalized British subject.Continued expansion of the business necessitated the opening of a new factory in Brook Street in 1889. The factory was extended in 1895, but by 1906 more accommodation was needed and a site of 11 ½ acres was acquired in the Manchester suburb of Burnage: the move to the new building was finally completed in 1914. Over the years, further developments in the techniques of chain manufacture were made, including the invention in 1895 of the inverted tooth or silent chain. Renold made his first visit to America in 1891 to study machine-tool developments and designed for his own works special machine tools, including centreless grinding machines for dealing with wire rods up to 10 ft (3 m) in length.The business was established as a private limited company in 1903 and merged with the Coventry Chain Company Ltd in 1930. Good industrial relations were always of concern to Renold and he established a 48-hour week as early as 1896, in which year a works canteen was opened. Joint consultation with shop stewards date2 from 1917. Renold was elected a Member of the Institution of Mechanical Engineers in 1902 and in 1917 he was made a magistrate of the City of Manchester.[br]Principal Honours and DistinctionsHonorary DSc University of Manchester 1940.Further ReadingBasil H.Tripp, 1956, Renold Chains: A History of the Company and the Rise of the Precision Chain Industry 1879–1955, London.J.J.Guest, 1915, Grinding Machinery, London, pp. 289, 380 (describes grinding machines developed by Renold).RTS -
56 Reichenbach, Georg Friedrich von
SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering, Photography, film and optics, Public utilities[br]b. 24 August 1772 Durlach, Baden, Germanyd. 21 May 1826 Munich, Germany[br]German engineer.[br]While he was attending the Military School at Mannheim, Reichenbach drew attention to himself due to the mathematical instruments that he had designed. On the recommendation of Count Rumford in Munich, the Bavarian government financed a two-year stay in Britain so that Reichenbach could become acquainted with modern mechanical engineering. He returned to Mannheim in 1793, and during the Napoleonic Wars he was involved in the manufacture of arms. In Munich, where he was in the service of the Bavarian state from 1796, he started producing precision instruments in his own time. His basic invention was the design of a dividing machine for circles, produced at the end of the eighteenth century. The astronomic and geodetic instruments he produced excelled all the others for their precision. His telescopes in particular, being perfect in use and of solid construction, soon brought him an international reputation. They were manufactured at the MathematicMechanical Institute, which he had jointly founded with Joseph Utzschneider and Joseph Liebherr in 1804 and which became a renowned training establishment. The glasses and lenses were produced by Joseph Fraunhofer who joined the company in 1807.In the same year he was put in charge of the technical reorganization of the salt-works at Reichenhall. After he had finished the brine-transport line from Reichenhall to Traunstein in 1810, he started on the one from Berchtesgaden to Reichenhall which was an extremely difficult task because of the mountainous area that had to be crossed. As water was the only source of energy available he decided to use water-column engines for pumping the brine in the pipes of both lines. Such devices had been in use for pumping purposes in different mining areas since the middle of the eighteenth century. Reichenbach knew about the one constructed by Joseph Karl Hell in Slovakia, which in principle had just been a simple piston-pump driven by water which did not work satisfactorily. Instead he constructed a really effective double-action water-column engine; this was a short time after Richard Trevithick had constructed a similar machine in England. For the second line he improved the system and built a single-action pump. All the parts of it were made of metal, which made them easy to produce, and the pumps proved to be extremely reliable, working for over 100 years.At the official opening of the line in 1817 the Bavarian king rewarded him generously. He remained in the state's service, becoming head of the department for roads and waterways in 1820, and he contributed to the development of Bavarian industry as well as the public infrastructure in many ways as a result of his mechanical skill and his innovative engineering mind.[br]Further ReadingBauernfeind, "Georg von Reichenbach" Allgemeine deutsche Biographie 27:656–67 (a reliable nineteenth-century account).W.Dyck, 1912, Georg v. Reichenbach, Munich.K.Matschoss, 1941, Grosse Ingenieure, Munich and Berlin, 3rd edn. 121–32 (a concise description of his achievements in the development of optical instruments and engineering).WKBiographical history of technology > Reichenbach, Georg Friedrich von
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57 Riefler, Sigmund
SUBJECT AREA: Horology[br]b. 9 August 1847 Maria Rain, Germanyd. 21 October 1912 Munich, Germany[br]German engineer who invented the precision clock that bears his name.[br]Riefler's father was a scientific-instrument maker and clockmaker who in 1841 had founded the firm of Clemens Riefler to make mathematical instruments. After graduating in engineering from the University of Munich Sigmund worked as a surveyor, but when his father died in 1876 he and his brothers ran the family firm. Sigmund was responsible for technical development and in this capacity he designed a new system of drawing-instruments which established the reputation of the firm. He also worked to improve the performance of the precision clock, and in 1889 he was granted a patent for a new form of escapement. This escapement succeeded in reducing the interference of the clock mechanism with the free swinging of the pendulum by impulsing the pendulum through its suspension strip. It proved to be the greatest advance in precision timekeeping since the introduction of the dead-beat escapement about two hundred years earlier. When the firm of Clemens Riefler began to produce clocks with this escapement in 1890, they replaced clocks with Graham's dead-beat escapement as the standard regulator for use in observatories and other applications where the highest precision was required. In 1901 a movement was fitted with electrical rewind and was encapsulated in an airtight case, at low pressure, so that the timekeeping was not affected by changes in barometric pressure. This became the standard practice for precision clocks. Although the accuracy of the Riefler clock was later surpassed by the Shortt free-pendulum clock and the quartz clock, it remained in production until 1965, by which time over six hundred instruments had been made.[br]Principal Honours and DistinctionsFranklin Institute John Scott Medal 1894. Honorary doctorate, University of Munich 1897. Vereins zur Förderung des Gewerbefleisses in Preussen Gold Medal 1900.Bibliography1907, Präzisionspendeluhren und Zeitdienstanlagen fürSternwarten, Munich (for a complete bibliography see D.Riefler below).Further ReadingD.Riefler, 1981, Riefler-Präzisionspendeluhren, Munich (the definitive work on Riefler and his clock).A.L.Rawlings, 1948, The Science of Clocks and Watches, 2nd edn; repub. 1974 (a technical assessment of the Riefler escapement in its historical context).See also: Marrison, Warren AlvinDV -
58 Johansson, Carl Edvard
[br]b. 15 March 1864 Orebro, Swedend. 30 September 1943 Eskilstuna, Sweden[br]Swedish metrologist and inventor of measuring-gauge blocks.[br]Carl Edvard Johansson was first apprenticed to a shoemaker, but he soon abandoned that career. In 1882 he went to America to join his brother Arvid working at a sawmill in the summer; in winter the brothers obtained further general education at the Gustavus Adolphus College at St Peter, Minnesota. They returned to Sweden in November 1884 and in the following year Carl obtained employment with a small engineering firm which rented a workshop in the government small-arms factory at Eskilstuna. In his spare time he attended the Eskilstuna Technical College and in 1888 he was accepted as an apprentice armourer inspector. After completion of his apprenticeship he was appointed an armourer inspector, and it was in his work of inspection that he realized that the large number of gauges then required could be reduced if several accurate gauges could be used in combination. This was in 1896, and the first set of gauges was made for use in the rifle factory. With these, any dimension between 1 mm and 201 mm could be made up to the nearest 0.01 mm, the gauges having flat polished surfaces that would adhere together by "wringing". Johansson obtained patents for the system from 1901, but it was not until c.1907 that the sets of gauges were marketed generally. Gauges were made in inch units for Britain and America—slightly different as the standards were not then identical. Johansson formed his own company to manufacture the gauges in 1910, but he did not give up his post in the rifle factory until 1914. By the 1920s Johansson gauges were established as the engineering dimensional standards for the whole world; the company also made other precision measuring instruments such as micrometers and extensometers. A new company, C.E.Johansson Inc., was set up in America for manufacture and sales, and the gauges were extensively used in the American automobile industry. Henry Ford took a special interest and Johansson spent several years in a post with the Ford Motor Company in Detroit, Michigan, until he returned to Sweden in 1936.[br]Principal Honours and DistinctionsHonorary Doctorates, Gustavus Adolphus College, St Peter and Wayne University, Detroit. Swedish Engineering Society John Ericsson Gold Medal. American Society of Mechanical Engineers Gold Medal.Further ReadingK.J.Hume, 1980, A History of Engineering Metrology, London, pp. 54–66 (a short biography).RTS -
59 PEM
1) Компьютерная техника: Physical Electronic Mail, particles environmental monitor2) Медицина: паранеопластический энцефаломиелит (paraneoplastic encephalomyelitis), белково-энергетическая недостаточность (Protein-energy malnutrition)3) Военный термин: Polaris evaluation missile, Purchased Equipment Maintenance, payload ejection mechanism, performance evaluation monitoring, phased equipment modernization, photographic equipment and materials, probable error of measurement, product effectiveness manual, production engineering measures, program element monitor, project engineering memorandum4) Техника: Power Entry Module, payload electronics module, processor expansion module, пьезоэлектрический модулятор (piezoelectric modulator)5) Химия: Polymer Electrolyte Membrane6) Оптика: photoelectromagnetic7) Сокращение: Polymer Electrolyte Membrane fuel cell, Program Element Monitor (USA), Proton Exchange Membrane (fuel cell), Proton Exchange Membrane8) Физиология: Parasitic Encephalitic Meningitis9) Электроника: Photo Elastic Modulator10) Вычислительная техника: product expansion module, Privacy Enhanced Mail (PSRG, RFC 1421/1422/1423/1424)11) Фирменный знак: Penn Engineering And Manufacturing, Precision Engineered Models12) Глоссарий компании Сахалин Энерджи: Physical Effects Modelling, project engineering manager главный инженер проекта13) Сетевые технологии: Privacy Enhanced Mail, почта повышенной секретности, электронная почта с усовершенствованной защитой14) Полимеры: polyethyl methacrylate (A)15) Сахалин Р: Project Engineering Manager16) Макаров: photoelectron microscopy17) Расширение файла: Privacy-Enhanced Mail (Internet), Program Editor macro (WordPerfect Library)18) Нефть и газ: physical effect modeling, МВФФ, моделирование воздействия физических факторов -
60 Whitworth, Sir Joseph
[br]b. 21 December 1803 Stockport, Cheshire, Englandd. 22 January 1887 Monte Carlo, Monaco[br]English mechanical engineer and pioneer of precision measurement.[br]Joseph Whitworth received his early education in a school kept by his father, but from the age of 12 he attended a school near Leeds. At 14 he joined his uncle's mill near Ambergate, Derbyshire, to learn the business of cotton spinning. In the four years he spent there he realized that he was more interested in the machinery than in managing a cotton mill. In 1821 he obtained employment as a mechanic with Crighton \& Co., Manchester. In 1825 he moved to London and worked for Henry Maudslay and later for the Holtzapffels and Joseph Clement. After these years spent gaining experience, he returned to Manchester in 1833 and set up in a small workshop under a sign "Joseph Whitworth, Tool Maker, from London".The business expanded steadily and the firm made machine tools of all types and other engineering products including steam engines. From 1834 Whitworth obtained many patents in the fields of machine tools, textile and knitting machinery and road-sweeping machines. By 1851 the company was generally regarded as the leading manufacturer of machine tools in the country. Whitworth was a pioneer of precise measurement and demonstrated the fundamental mode of producing a true plane by making surface plates in sets of three. He advocated the use of the decimal system and made use of limit gauges, and he established a standard screw thread which was adopted as the national standard. In 1853 Whitworth visited America as a member of a Royal Commission and reported on American industry. At the time of the Crimean War in 1854 he was asked to provide machinery for manufacturing rifles and this led him to design an improved rifle of his own. Although tests in 1857 showed this to be much superior to all others, it was not adopted by the War Office. Whitworth's experiments with small arms led on to the construction of big guns and projectiles. To improve the quality of the steel used for these guns, he subjected the molten metal to pressure during its solidification, this fluid-compressed steel being then known as "Whitworth steel".In 1868 Whitworth established thirty annual scholarships for engineering students. After his death his executors permanently endowed the Whitworth Scholarships and distributed his estate of nearly half a million pounds to various educational and charitable institutions. Whitworth was elected an Associate of the Institution of Civil Engineers in 1841 and a Member in 1848 and served on its Council for many years. He was elected a Member of the Institution of Mechanical Engineers in 1847, the year of its foundation.[br]Principal Honours and DistinctionsBaronet 1869. FRS 1857. President, Institution of Mechanical Engineers 1856, 1857 and 1866. Hon. LLD Trinity College, Dublin, 1863. Hon. DCL Oxford University 1868. Member of the Smeatonian Society of Civil Engineers 1864. Légion d'honneur 1868. Society of Arts Albert Medal 1868.Bibliography1858, Miscellaneous Papers on Mechanical Subjects, London; 1873, Miscellaneous Papers on Practical Subjects: Guns and Steel, London (both are collections of his papers to technical societies).1854, with G.Wallis, The Industry of the United States in Machinery, Manufactures, andUseful and Ornamental Arts, London.Further ReadingF.C.Lea, 1946, A Pioneer of Mechanical Engineering: Sir Joseph Whitworth, London (a short biographical account).A.E.Musson, 1963, "Joseph Whitworth: toolmaker and manufacturer", Engineering Heritage, Vol. 1, London, 124–9 (a short biography).D.J.Jeremy (ed.), 1984–6, Dictionary of Business Biography, Vol. 5, London, 797–802 (a short biography).W.Steeds, 1969, A History of Machine Tools 1700–1910, Oxford (describes Whitworth's machine tools).RTS
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