-
1 carburized steel
карбидосталь
Композиц. термоупроч. материал, содерж. 30—35 об. % мелкодисперсных частиц карбида или карбонитрида титана, равномерно распредел. в матрице (основе) из инструмент, теплостойкой стали, преимущ. из быстрорежущей Р6М5, Р6М5К5; изготовл. методами порошковой металлургии в виде полуфабрикатов (пруток, полоса и т.п.). По уровню режущих св-в к. занимает промежуточное положение между быстрореж. сталями повыш. теплостойкости (Р6М5К, Р9М4К8) и W-Co- сплавами (типа ВК8), превосходя последние по прочности при изгибе на 600-800 МПа.
[ http://metaltrade.ru/abc/a.htm]Тематики
EN
Англо-русский словарь нормативно-технической терминологии > carburized steel
-
2 carburized steel
1. цементированная сталь2. науглероженная стальEnglish-Russian big polytechnic dictionary > carburized steel
-
3 carburized steel
Большой англо-русский и русско-английский словарь > carburized steel
-
4 carburized steel
-
5 carburized steel
Англо-русский словарь нефтегазовой промышленности > carburized steel
-
6 carburized steel
1) Металлургия: науглероженная сталь2) Нефть: цементированная сталь -
7 carburized steel
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8 carburized steel
English-Russian dictionary of mechanical engineering and automation > carburized steel
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9 carburized steel
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10 carburized steel
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11 deep carburized steel
Англо-русский словарь по машиностроению > deep carburized steel
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12 steel
сталь || стальной- abrasion-resistant steel
- acid Bessemer steel
- acid electric steel
- acid open-hearth steel
- acid steel
- acid-resisting steel
- age-hardenable steel
- ageing steel
- aircraft structural steel
- air-hardened steel
- air-hardening steel
- air-melted steel
- alkaliproof steel
- alkali-resistant steel
- alloy steel
- alloy tool steel
- alloyed steel
- alphatized steel
- aluminized steel
- aluminum grain-refined steel
- aluminum steel
- aluminum-coated steel
- aluminum-nickel steel
- aluminum-stabilized steel
- anchor steel
- angle steel
- annealed steel
- anticorrosion steel
- arc-furnace steel
- armco steel
- ausaging steel
- ausforming steel
- austenitic manganese steel
- austenitic Ni-Cr stainless steel
- austenitic stainless steel
- austenitic steel
- austenitic-carbidic steel
- austenitic-intermetallic steel
- automatic steel
- automobile steel
- axle steel
- bainitically heat-treated steel
- balanced steel
- ball bearing steel
- banding steel
- bandsaw steel
- bar steel
- basic Bessemer steel
- basic converter steel
- basic open-hearth steel
- basic oxygen steel
- bearing steel
- bearing-grade steel
- beaten steel
- beryllium steel
- Bessemer steel
- blanking steel
- blister steel
- blue steel
- boiler steel
- boron steel
- bottle-top steel
- bottom-run steel
- bright drawing steel
- bright steel
- bright-drawn steel
- bright-finished steel
- bronze steel
- bulb steel
- bulb-angle steel
- burned steel
- capped steel
- carbon nitrided steel
- carbon steel
- carbon tool steel
- carbonized steel
- carbon-martensite steel
- carbon-molybdenum steel
- carbon-vacuum deoxidized steel
- carburized steel
- carburizing steel
- case-hardened steel
- case-hardening steel
- cast steel
- cemented steel
- chain steel
- chilled steel
- chisel steel
- chrome steel
- chrome-manganese steel
- chrome-molybdenum steel
- chrome-nickel steel
- chrome-nickel-alloy steel
- chrome-nickel-molibdenum steel
- chrome-plated steel
- chrome-tungsten steel
- chrome-vanadium steel
- chromium steel
- chromium tool steel
- chromium-aluminum steel
- chromium-cobalt steel
- chromium-copper steel
- chromium-manganese steel
- chromium-molibdenum steel
- chromium-nickel steel
- chromium-nickel-molybdenum steel
- chromium-silicon steel
- chromium-tungsten steel
- chromium-tungsten-vanadium steel
- chromized steel
- clad steel
- cobalt steel
- cobalt-nickel steel
- coiled steel
- cold work steel
- cold-drawn steel
- cold-heading steel
- cold-rolled steel
- columbium-stabilized steel
- commercial forging steel
- commercial quality steel
- commercial steel
- common steel
- composite steel
- compound steel
- concrete-prestressing steel
- concrete-reinforcing steel
- constructional steel
- consumable electrode vacuum-melted steel
- controlled rimming steel
- converted steel
- converter steel
- copper steel
- copper-bearing steel
- copper-chromium steel
- copperclad steel
- copper-nickel steel
- copper-plated steel
- corrosion-resistant steel
- corrosion-resisting steel
- corrugated sheet steel
- CQ steel
- creep-resisting steel
- crucible steel
- crude steel
- cutlery-type stainless steel
- cyanided steel
- damascus steel
- damask steel
- DDQ steel
- dead-hard steel
- dead-melted steel
- dead-soft steel
- deep drawing quality steel
- deep drawing steel
- deep-hardening steel
- degasified steel
- deoxidized steel
- diamond tread steel
- die steel
- direct-process steel
- dirty steel
- dopped steel
- double-reduced steel
- double-refined steel
- double-shear steel
- drawn steel
- drill steel
- duplex steel
- dynamo sheet steel
- dynamo steel
- easily deformable steel
- EDD steel
- effervescent steel
- electric furnace steel
- electric steel
- electric tool steel
- electrical furnace steel
- emergency steel
- eutectoid steel
- exotic steel
- exposed quality steel
- extra deep drawing steel
- extrafine steel
- extrahard steel
- extrahigh tensile steel
- extrasoft steel
- face-hardened steel
- fagoted steel
- fashioned steel
- fast-finishing steel
- fast-machine steel
- faulty steel
- ferrite steel
- ferritic stainless steel
- ferritic steel
- fiery steel
- figured steel
- file steel
- fine steel
- fine-grained steel
- finished steel
- first quality steel
- flange steel
- flat steel
- flat-bulb steel
- flat-rolled steel
- forge steel
- forged steel
- forging die steel
- forging steel
- free-cutting steel
- free-machining steel
- fully deoxidized steel
- fully finished steel
- galvanized steel
- gear steel
- general purpose steel
- glass-hard steel
- grade steel
- graphitic steel
- graphitizable steel
- gun barrels steel
- gun steel
- Hadfield steel
- half-hard steel
- Halvan tool steel
- hammered steel
- hard cast steel
- hard steel
- hard-chrome steel
- hardened steel
- hard-grain steel
- heat-resistant steel
- heat-treated steel
- heavily alloyed steel
- heavy-fagoted steel
- heavy-melting steel
- hexagonal steel
- high-alloy steel
- high-carbon steel
- high-chromium steel
- high-cobalt steel
- high-creep strength steel
- high-ductility steel
- high-elastic limit steel
- higher-carbon steel
- high-grade steel
- high-hardenability core steel
- high-hardenability steel
- high-manganese steel
- high-nickel steel
- high-permeability steel
- high-quality steel
- high-resistance steel
- high-speed steel
- high-strength low alloy steel
- high-strength steel
- high-sulphur steel
- high-temperature steel
- high-tensile steel
- hollow drill steel
- hot die steel
- hot-brittle steel
- hot-rolled steel
- hot-work steel
- hot-working die steel
- hot-working steel
- HSLA steel
- H-steel
- hypereutectoid steel
- hyperpearlitic steel
- hypoeutectoid steel
- hypopearlitic steel
- Indian steel
- induction furnace steel
- induction vacuum melted steel
- ingot steel
- intermediate-alloy steel
- iron-chromium stainless steel
- irreversible steel
- killed steel
- knife steel
- knife-blade steel
- lead-coated steel
- leaded steel
- lean alloy steel
- ledeburitic steel
- light gage steel
- liquid-compressed steel
- loman steel
- low earing steel
- low-alloy steel
- low-alloyed steel
- low-carbon steel
- low-ductility steel
- low-expansion steel
- low-hardenability steel
- low-hardening steel
- low-manganese steel
- low-nickel steel
- low-phosphorus steel
- low-texture steel
- machine-tool steel
- magnet steel
- mandrel steel
- manganese steel
- manganese-killed steel
- manganese-silicon steel
- maraging steel
- martempering steel
- martensitic steel
- mechanically capped steel
- medium alloy steel
- medium-carbon steel
- medium-hard steel
- medium-strength steel
- medium-temper steel
- merchant steel
- mild steel
- milling steel
- mixed steel
- molybdenum steel
- needled steel
- nickel steel
- nickel-chrome steel
- nickel-chrome-molybdenum steel
- nickel-chromium steel
- nickel-chromium-molybdenum steel
- nickel-clad steel
- nickel-molybdenum steel
- nitrided steel
- nonaging steel
- noncorrosive steel
- nondeforming steel
- nonhardening steel
- nonmagnetic steel
- nonpiping steel
- nonrustic steel
- nonshrinking steel
- nonstrain-aging steel
- normal steel
- octagon steel
- oil-hardening steel
- open-hearth steel
- open-poured steel
- ordinary steel
- oriented steel
- overblown steel
- overheated steel
- over-reduced steel
- oxidation-resisting steel
- paragon steel
- pearlitic steel
- perished steel
- permanent-magnet steel
- PH steel
- piled steel
- pipe steel
- piped steel
- plain carbon steel
- plain steel
- planished sheet steel
- planished steel
- plate steel
- plow steel
- pneumatic steel
- polished sheet steel
- polished steel
- pot steel
- powder metallurgical compacted steel
- powdered metal high-speed steel
- precipitation-hardening steel
- precision steel
- pressure vessel steel
- primary steel
- puddle steel
- puddled steel
- punching steel
- purified steel
- PV steel
- QT steel
- quality steel
- quenched-and-tempered steel
- quick-cutting steel
- quick-speed steel
- rail steel
- railway structural steel
- rapid machining steel
- rapid steel
- raw steel
- red-hard steel
- refined steel
- refining steel
- refractory steel
- reinforcing steel
- rephosphorized steel
- resilient steel
- resulphurized steel
- rimmed steel
- rimming steel
- rising steel
- rivet steel
- rolled section steel
- rolled steel
- roller-bearing steel
- rose steel
- round steel
- rustless steel
- rust-resisting steel
- saw steel
- scrap steel
- screw steel
- secondary steel
- section steel
- selenium steel
- self-hardening steel
- semideoxidized steel
- semifinished steel
- semikilled steel
- shallow-hardening steel
- shape steel
- shear steel
- shearing steel
- sheet steel
- shock-resisting steel
- Siemens-Martin steel
- silchrome steel
- silicon steel
- silicon-killed steel
- silicon-manganese steel
- silver steel
- simple steel
- skelp steel
- slowly cooled steel
- soft steel
- special steel
- special treatment steel
- spheroidized steel
- spotty steel
- spring steel
- stabilized steel
- stainless clad steel
- stainless steel
- standard steel
- stock steel
- strain-aged steel
- stress-relieved annealed steel
- strip steel
- strong steel
- structural steel
- super-corrosion-resistant stainless steel
- superduty steel
- surface-hardening steel
- surgical steel
- tap steel
- tapped-on-carbon steel
- T-bulb steel
- tee-bulb steel
- tempered steel
- tensile strength steel
- ternary steel
- thermostrengthened steel
- Thomas steel
- through-hardening steel
- titanium steel
- titanium-stabilized steel
- tool steel
- Tor steel
- transformation induced plasticity steel
- transformer steel
- treated steel
- TRIP steel
- tube steel
- tungsten steel
- turbohearth steel
- two-ply steel
- tyre steel
- ultrastrong steel
- unkilled steel
- unsound steel
- vacuum carbon deoxidized steel
- vacuum degased steel
- vacuum-cast steel
- vacuum-induction melted steel
- vacuum-remelted steel
- valve steel
- vanadium steel
- water-hardening steel
- wear-resisting alloy steel
- weathering steel
- weld steel
- weldable steel
- welding steel
- wild steel
- wire rope steel
- Wootz steel
- wrought steelEnglish-Russian dictionary of mechanical engineering and automation > steel
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13 steel
сталь || стальной— alloyed steel
* * *
* * *
1) сталь || стальной2) стальной бур•- carbide-tipped steel
- carburized steel
- cement steel
- collared steel
- corrosion-resistant steel
- drilling steel
- extension steel
- extra hard steel
- finishing steel
- flat drill steel
- flexible ribbon steel
- hand drill steel
- hexagon steel
- high-carbon steel
- high-speed steel
- holing drill steel
- hollow steel
- integral steel
- machine steel
- pipe steel
- plow steel
- rock-drill steel
- round steel
- rustless steel
- sectional steel
- sharpened steel
- six-point steel
- solid drill steel
- spiral-rolled drill steel
- stuck steel
- tipped steel
- tungsten steel
- tungsten-carbide tipped drill steel -
14 steel
сталь; арматура; стальной•
- acid-resistant steel
- alloy steel
- bar steel
- blue steel
- boiler steel
- carbon steel
- carburized steel
- carburizing steel
- cast steel
- chilled steel
- chisel tool steel
- chrome steel
- cold-working die steel
- commercial steel
- complex alloy steel
- concrete steel
- corrosion-resisting steel
- die steel
- drill steel
- effervescing steel
- eutectoid steel
- forging steel
- free-cutting steel
- hardened steel
- heat-resisting steel
- high-alloy steel
- high-carbon steel
- high-speed steel
- high steel
- high-tensile steel
- low-carbon steel
- machine steel
- plate steel
- rail steel
- rapid tool steel
- ribbon steel
- rustless steel
- screw steel
- sheet steel
- spring steel
- stainless steel
- structural steel
- tool steel
- welding steel
- wild steel
- wrought steel -
15 carburized layer
radiation-sensitive layer — слой, чувствительный к излучению
intermediate layer — промежуточный слой; контактный подслой
English-Russian big polytechnic dictionary > carburized layer
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16 carbonized steel
карбидосталь
Композиц. термоупроч. материал, содерж. 30—35 об. % мелкодисперсных частиц карбида или карбонитрида титана, равномерно распредел. в матрице (основе) из инструмент, теплостойкой стали, преимущ. из быстрорежущей Р6М5, Р6М5К5; изготовл. методами порошковой металлургии в виде полуфабрикатов (пруток, полоса и т.п.). По уровню режущих св-в к. занимает промежуточное положение между быстрореж. сталями повыш. теплостойкости (Р6М5К, Р9М4К8) и W-Co- сплавами (типа ВК8), превосходя последние по прочности при изгибе на 600-800 МПа.
[ http://metaltrade.ru/abc/a.htm]Тематики
EN
Англо-русский словарь нормативно-технической терминологии > carbonized steel
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17 cement steel
карбидосталь
Композиц. термоупроч. материал, содерж. 30—35 об. % мелкодисперсных частиц карбида или карбонитрида титана, равномерно распредел. в матрице (основе) из инструмент, теплостойкой стали, преимущ. из быстрорежущей Р6М5, Р6М5К5; изготовл. методами порошковой металлургии в виде полуфабрикатов (пруток, полоса и т.п.). По уровню режущих св-в к. занимает промежуточное положение между быстрореж. сталями повыш. теплостойкости (Р6М5К, Р9М4К8) и W-Co- сплавами (типа ВК8), превосходя последние по прочности при изгибе на 600-800 МПа.
[ http://metaltrade.ru/abc/a.htm]Тематики
EN
Англо-русский словарь нормативно-технической терминологии > cement steel
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18 case
кожух; коробка (оконная, дверная или здания); футляр (для инструментов); обойма (напр. резьбомера или набора щупов); ящик; контейнер; шкаф; сумка; картер; корпус (прибора или часов); чехол; обшивка; оболочка; облицовка; рубашка; оправа; покрышка шины; науглероженный (или цементационный) слой (на поверхности стального изделия); упрочнённый поверхностный слой (металла); случай; обстоятельство; дело; II закрывать кожухом; заключать в оболочку; обшивать; покрывать; класть в ящик; вставлять в оправу- case-chilled - case conveyor - case foam - case-harden - case-hardened steel - case hardening - case spring file - air case - balance case - cam case - carrying case - cartridge case - chain case - chain drive case - change gear case - circular scroll case - clinometer case - cluster case - clutch case - column case - crank case - deep carburized case - differential case - differential gear case - door case - drive case - electronics and electrotechnics maintenance case - engine case - fan case - field case - heavy case - gear case - gyro case - instrument case -
19 gear
2) аппаратура; оборудование4) привод7) зубчатое колесо, ЗК, авто шестерня8) редуктор•in gear — в зацеплении;landing gear is down and locked — шасси выпущено и установлено на замки выпущенного положения;out of gear — вне зацепления, расцепленный;to gear down — 1. понижать скорость вращения ( вала) с помощью зубчатой передачи 2. выпускать шасси;to extend the landing gear — выпускать шасси;to lock in ( to put into) gear — вводить в зацепление, включать передачу;to raise (to retract) the landing gear — убирать шасси;to run out the landing gear — выпускать шасси;to throw into gear — вводить в зацепление, включать передачу;to throw out of gear — выводить из зацепления, выключать передачу;to gear up — повышать скорость вращения ( вала) с помощью зубчатой передачи;gear with concave tooth profile — передача с вогнутым профилем зубьев, передача с вогнутыми зубьями;gear with convex tooth profile — передача с выпуклым профилем зубьев, передача с выпуклыми зубьями-
accessory gear
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Ackerman steering gear
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additional change gear
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admission gear
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aft landing gear
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airscrew reduction gear
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airscrew reversing gear
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alighting gear
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amphibious landing gear
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anchor handling gear
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anchor gear
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antislide gear
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antiwheelspin gear
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arresting landing gear
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audio gear
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auxiliary gear
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axle drive gear
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back gear
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badly meshing gears
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bar throw-off gear
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barring gear
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beaching gear
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bell-operating gear
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bell-type distributing gear
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bevel gear
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bevel spur gear
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blade stop gear
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blasting gear
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boat-handling gear
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bottom gear
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bow anchor gear
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box-lifting gear
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brake gear
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brush gear
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brush rocker gear
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brush-lifting gear
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buffer gear
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bull gear
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cable gear
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cam gear
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cam-and-lever steering gear
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cantilever landing gear
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carburized gear
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cardan gear
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cargo gear
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castor landing gear
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center coupler draft gear
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chain gear
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change gear
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chargehole-opening gear
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cluster gear
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clutch gear
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coiler gear
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collapsed landing gear
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composite gear
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composite tooth profile gear
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cone friction gear
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cone gear
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connecting rod gear
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constant-mesh gear
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control gear
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crank gear
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creeper gear
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crossed-axis helical gear
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crowding gear
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crown gear
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damper gear
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degaussing gear
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differential change gear
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differential gear
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discharging gear
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disconnecting gear
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distributing gear
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door-extracting gear
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door-lifting gear
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door-operating gear
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double gear
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double-reduction gear
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double-wheel gear
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draft gear
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draw-buffing gear
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drive gear
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driven gear
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driver gear
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driving gear
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dummy landing gear
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dumping gear
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eccentric gear
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echo sounding gear
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electric steering gear
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electrohydraulic steering gear
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electromagnetic gear
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electromechanical steering gear
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elliptical gear
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emergency gear
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emergency landing gear
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engine gear
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equalizing gear
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equivalent helical gear
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experimental gear
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external gear
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face gear
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feed gear
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first gear
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fishing gear
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fixed gear
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fixed landing gear
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floating gear
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flotation landing gear
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flywheel ring gear
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follower gear
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friction all-steel draft gear
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friction draft gear
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friction gear
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friction-rubber drait gear
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gate-operating gear
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globoidal gear
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governor gear
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ground gear
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hand-propelling gear
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hardened gear
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helical gear
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herring-bone gear
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high gear
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high-capacity draft gear
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high-load carrying tooth gear
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high-ratio gear
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high-voltage gear
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hill-climbing gear
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hoisting gear
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holding-down gear
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hull-equipped landing gear
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hydraulic draft gear
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hydraulic drive gear
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hydraulic gear
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hydraulic steering gear
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hydraulic-friction draft gear
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hypoid gear
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hypoid-spiral bevel gear
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idle gear
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inadvertently retracted landing gear
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increase gear
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index gear
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interlocking gear
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internal gear
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involute gear
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irreversible gear
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jacking gear
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landing gear
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lantern gear
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launching gear
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layshaft gears
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leveling gear
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lifting gear
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locking gear
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lock gear
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low gear
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lubricating gear
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magnetic gear
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main drive gear
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main gear
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main landing gear
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mating gear
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mechanical steering gear
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metric gear
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miter gear
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module gear
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mooring gear
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multiengine gear
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multiplying gear
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netting gear
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nose landing gear
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nylon gear
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oiling gear
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on-load tap-changing gear
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pedal gear
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pick-off gear
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pin gear
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pinion gear
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piston valve gear
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planetary gear
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planet gear
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point operating gear
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pontoon equipped landing gear
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poorly meshing gears
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positive valve gear
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power gear
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power return gear
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prematurely retracted landing gear
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profile-modified spur gear
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profile-shifted gear
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propeller gear
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propeller planetary gear
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propulsion reduction gear
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protective gear
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pulley gear
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pusher-control gear
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rack-and-pinion gear
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rack gear
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racking gear
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ram-type steering gear
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ratched-and-pawl gear
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ratchet gear
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recirculating ball gear
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reducing gear
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reference gear
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release gear
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remote control gear
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retractable landing gear
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reverse gear
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right-angle gear
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ring gear
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rotation gear
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rotor intermediate gear
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rubber-hydraulic draft gear
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running gear
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saddle gear
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safety gear
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sanding gear
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satellite gear
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screw gear
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screw-down gear
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selective gear
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selector gear
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self-changing gear
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self-locking gear
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single-lever with rolling stud steering gear
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single-lever with sliding stud steering gear
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skew bevel gear
-
skew gear
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skid-equipped landing gear
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ski-equipped landing gear
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slewing gear
-
slew gear
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sliding gear
-
solid gear
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spiral bevel gear
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spiral gear
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spool gear
-
spooling gear
-
spur gear
-
spur rack gear
-
star gear
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starting gear
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stationary ring gear
-
steering gear
-
stepped gear
-
stern anchor gear
-
stop gear
-
straight bevel gear
-
sun gear
-
sun-and-planet gear
-
switch gear
-
switch release gear
-
swivel gear
-
synchronizing gear
-
tailwheel landing gear
-
tappet gear
-
telemetering gear
-
throw-over gear
-
thrust gear
-
tilting gear
-
tipping gear
-
tooth gear
-
top gear
-
top-charging gear
-
towing gear
-
tow gear
-
trailer gear
-
transmission gear
-
traveling gear
-
traverse gear
-
traversing gear
-
tricycle-equipped landing gear
-
trip gear
-
triple helical gear
-
triple-change gear
-
tripping gear
-
turbocharger drive gear
-
turning gear
-
twin-lever with rolling studs steering gear
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twin-lever with sliding studs steering gear
-
uncoupling gear
-
underload tap-changing gear
-
valve-actuating gear
-
vane-type steering gear
-
variable-speed gear
-
wave gear
-
welded structure gear
-
winding gear
-
worm gear
-
worm-and-roller steering gear
-
worm-and-sector steering gear
См. также в других словарях:
Damascus steel — hand wrought steel, made in various Asian countries, from parts of a bloom of heterogeneous composition, repeatedly folded over and welded and finally etched to reveal the resulting grain: used esp. for sword blades. Also called damask, damask… … Universalium
carbonized (carburized, cement) steel — Смотри Карбидосталь … Энциклопедический словарь по металлургии
Heckler & Koch P30 — The Heckler Koch P30L. Type Semi automatic pistol Place of origin … Wikipedia
hand tool — any tool or implement designed for manual operation. * * * Introduction any of the implements used by craftsmen in manual operations, such as chopping, chiseling, sawing, filing, or forging. Complementary tools, often needed as auxiliaries to… … Universalium
карбидосталь (металлургия) — карбидосталь Композиц. термоупроч. материал, содерж. 30—35 об. % мелкодисперсных частиц карбида или карбонитрида титана, равномерно распредел. в матрице (основе) из инструмент, теплостойкой стали, преимущ. из быстрорежущей Р6М5, Р6М5К5;… … Справочник технического переводчика
Heckler & Koch P2000 — Infobox Weapon name=P2000 caption=P2000 chambered in .40 S W. origin=flag|Germany type=Semi automatic pistol is ranged=yes service= used by= wars= designer=Heckler Koch design date=2001 manufacturer=Heckler Koch unit cost= production… … Wikipedia
Pattern welding — is the practice in sword and knife making of forming a blade of several metal pieces of differing composition that are forge welded together and twisted and manipulated to form a pattern. Often incorrectly called Damascus steel (which is produced … Wikipedia
metallurgy — metallurgic, metallurgical, adj. metallurgically, adv. metallurgist /met l err jist/ or, esp. Brit., /meuh tal euhr jist/, n. /met l err jee/ or, esp. Brit., /meuh tal euhr jee/, n. 1. the technique or science of working or heating metals so as… … Universalium
Case hardening — or surface hardening is the process of hardening the surface of a metal, often a low carbon steel, by infusing elements into the material s surface, forming a thin layer of a harder alloy. Case hardening is usually done after the part in question … Wikipedia
Krupp armour — was a type of steel armour used in the construction of capital ships starting shortly before the end of the 19th century. It was developed by Krupp Arms Works in 1893 and quickly replaced Harvey armor as the primary method of protecting naval… … Wikipedia
Oregrounds iron — Statue of Louis de Geer (1587 1652) in Norrköping, Sweden. De Geer introduced the Walloon method to Sweden. Oregrounds iron was a grade of iron that was regarded as the best grade available in 18th century England. The term was derived from the… … Wikipedia