-
1 allowable power limit
допустимый предел по мощности
—
[А.С.Гольдберг. Англо-русский энергетический словарь. 2006 г.]Тематики
EN
Англо-русский словарь нормативно-технической терминологии > allowable power limit
-
2 allowable power limit
Техника: допустимый предел мощности -
3 limit
1) предел; граница; порог || устанавливать предел; ограничивать2) габарит3) допуск4) мн. ч. интервал значений•limit from the left — предел слева;limit from the right — предел справа;to exceed forward center of gravity limit — возд. превышать переднюю максимально допустимую центровку;to fall within clearance limits — вписываться в габарит;to pass to the limit — переходить к пределуlimit of drilling mud temperature stability — предельная (теоретическая) термостойкость бурового раствораlimit of "in" — предел втягивания ( руки робота)limit of "out" — предел выдвижения ( руки робота)limit of plasticity — предел пластичности, граница раскатывания ( глинистых грунтов)limit of proportionality — сопр. предел пропорциональностиlimit of superheat — предельный перегрев ( при вскипании жидкости)limit of "swing" — предел качания ( руки робота)-
age limit
-
allowable time limit
-
alternating bending stress fatigue limit
-
audibility limit
-
axleload limit
-
backfire limit
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bilateral limit
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breaking limit
-
burning limit
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check-in time limit
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clearance limit
-
combustion limit
-
condemning limit
-
confidence limit
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constraint limit
-
conventional endurance limit
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corrosion endurance limit
-
creep limit
-
cross-wind limit
-
damming limit
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design limits
-
detection limit
-
dimension limit
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discharge limits
-
elastic limit
-
endurance limit
-
estimated limit
-
expected destruction limit
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explosive limits
-
exposure limit
-
extension limit
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fatigue limit
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fetch limit
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fiducial limit
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fire limits
-
fixed stop limit
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flame initiation limit
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flashback limit
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flyover noise limit
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force power limit
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glass-forming limit
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grade limit
-
gradeability limit
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high stop warning limit
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high torque limit
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highest torque limit
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hydraulic valve operating limit
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ice limit
-
ignition limit
-
improper limit
-
inflammability limit
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interlocking limit
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keeping limit
-
kinetic limit
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lean limit
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liquid limit
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load limit
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long-wavelength limit
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long-wave limit
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low stop limit
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low torque warning limit
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lower explosive limit
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lower frequency limit
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lower limit
-
lowest torque limit
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machine overload limit
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magnetic limit
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maximum concentration limit
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maximum permissible limit
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measurement limits
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negative deviation limit
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neutron dose limit
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noise exposure limit
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normal operation limits
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operating temperature limit
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operation time limit
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page limit
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pedal travel limit
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permissible limit
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physical limits
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plastic limit
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positive deviation limit
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power system stability limit
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predetermined maximum limit
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prescribed limit
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preset limit
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preset size limit
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processing limits
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programmable limit
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proportional limit
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rate limit
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rated limit
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reaction limit
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rebuild limit
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reject limit
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release limit
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resolution limit
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response limit
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restricting speed limit
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robot's load limit
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saturation limit
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semiautomatically selected limit
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service limit
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Shannon limit
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short-wavelength limit
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short-wave limit
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smoke limit
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solubility limit
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speed limit
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station limit
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steady-state stability limit
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stress limit
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switching limit
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tensile yield limit
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tension-and-compression fatigue limit
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thermal cracking limit
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threshold concentration limit
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tightening limit
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time-current zone limits
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tolerance limit
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torque limit
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torque power limit
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torsional endurance limit
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towing speed limit
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transient stability limit
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travel limit
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tripping limit
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ultimate stress limit
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upper elevation limit
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upper frequency limit
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upper limit
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voltage-temperature limits
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warning limit
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wear limit
-
yard limit -
4 limit
1) предел; предельное количество; ограничение || ограничивать; задавать предел, задавать пределы || предельный; граничный2) допуск; предельный размер3) ограничитель; конечный выключатель•- acceleration limitwithin the tolerance limits — в допустимых размерных пределах; в пределах допусков
- acceptable limit of safety factor
- action limits
- alignment limits
- allowable limits
- average outgoing quality limit
- bending endurance limit
- confidence limit
- constraint limit
- control limits
- creep limit
- creeping limit
- detection limit
- double software limit
- down limit
- elastic limit
- electric limit
- emergency shutdown limit
- emission limit
- end-of-travel limit
- endurance limit
- EOT limit
- error limit
- fatigue endurance limit
- fatigue limit
- fault limits
- fixed stop limit
- force/torque/power limit
- grading limit
- innermost limit
- laser-annealing-induced solubility limit
- legibility limit
- limit of accuracy
- limit of action
- limit of effective range
- limit of endurance
- limit of size
- limit of tolerance
- limits of error
- limits of interference
- limits of reach
- lower limit
- machine overload limit
- maximum limit of size
- maximum material limit
- memory capacity limit
- minimum limit of size
- minimum material limit
- outermost limit
- pitting limit
- predetermined limit
- predetermined maximum limit
- preprogrammed limit
- prescribed limit
- preset limit
- preset size limit
- programmable limit
- proportional elastic limit
- proportional limit
- proportionality limit
- rate limit
- resolution limit
- returning limit
- robot's load limit
- saturation limit
- scoring limit
- search limits
- semiautomatically selected limit
- set limit
- setting limit
- software limit
- software stroke limits
- speed limit
- stability limit
- stress limit
- stroke limit
- surface endurance limit
- tight limit
- tolerable limit
- tolerance limit
- travel limit
- up limit
- upper limit
- VB limit
- warning limit
- wear limit
- working limit
- yield limitEnglish-Russian dictionary of mechanical engineering and automation > limit
-
5 limit
предел, граница; допуск; ограничиватьangle of attack limit — предел по углу атаки, предельное значение угла атаки
c.g. limit — предельная центровка
duration limit of the thrust chamber — предельная продолжительность работы ракетного двигателя (до разрушения из-за перегрева)
— q limit -
6 limit
предельное значение, предел; граница- allowable limit
- axle load limit
- clearance height limit
- clearance width limit
- cold-start limit
- combustion limit
- cornering limit
- emission limit
- endurance limit
- fatigue limit
- ignition limit
- knock limit
- lean limit
- limit of combustibility
- load limit
- permissible limit
- power limit
- pressure limit
- safety limit
- smoke limit
- speed limit
- stability limit
- stress limit
- sulphur limit
- torque limit
- torsional stress limit
- wear limit -
7 APL
1) Общая лексика: Уровень давления в затрубном пространстве (annular pressure level), Потери затрубного давления (annular pressure losses)2) Компьютерная техника: язык программирования, алгоритмический язык (algorithmic programming language)3) Медицина: acute promyelocyte leukemia, ОПЛ, острый промиелоцитарный лейкоз4) Военный термин: Aiming Post Light, Army personnel letter, Army promotion list, acceptable performance level, advanced procurement list, allowance parts list, approved parts list, Applied Physics Laboratory (Johns Hopkins University), Barracks Craft (non self-propelled)6) Экономика: above poverty line, выше прожиточного минимума, выше уровня нищеты, выше уровня нищеты экон7) Финансы: anticipated probable loss8) Оптика: average picture level9) Телекоммуникации: Analog Private Line10) Сокращение: Aero Propulsion Laboratory (USAF), American President Lines, Anti-Personnel Landmines, Applied Physics Laboratory, John Hopkins University (USA), Barracks craft (USA), acute promyelocytic leukemia, airplane, automatic phase lock, Acceptable Process Level, Automatic Picture Level11) Университет: Accreditation Of Prior Learning12) Физика: Advanced Physics Laboratory13) Вычислительная техника: acute promyelocytic leukemia (Disease), A Programming Language (IBM), язык программирования APL, a programming language14) Нефть: approximate permissible level, приемлемый уровень качества при данном процессе изготовления (acceptable process level)15) Иммунология: autologous peripheral lymphocytes16) Транспорт: Airport Lights, American President Lines, Ltd.17) Фирменный знак: Airworthy Productions, L. L. C.18) Образование: Accredited Prior Learning, Automatic Progression Level19) Океанография: Applied Physics Laboratory20) Макаров: aircraft-position line21) Расширение файла: APL work space, Support module (Manugraphics APL products), A Programming Language (Mathematics)22) AMEX. Atlas Pipeline Partners, L. P.23) Профсоюзы: Alliance of Progressive Labor -
8 Apl
1) Общая лексика: Уровень давления в затрубном пространстве (annular pressure level), Потери затрубного давления (annular pressure losses)2) Компьютерная техника: язык программирования, алгоритмический язык (algorithmic programming language)3) Медицина: acute promyelocyte leukemia, ОПЛ, острый промиелоцитарный лейкоз4) Военный термин: Aiming Post Light, Army personnel letter, Army promotion list, acceptable performance level, advanced procurement list, allowance parts list, approved parts list, Applied Physics Laboratory (Johns Hopkins University), Barracks Craft (non self-propelled)6) Экономика: above poverty line, выше прожиточного минимума, выше уровня нищеты, выше уровня нищеты экон7) Финансы: anticipated probable loss8) Оптика: average picture level9) Телекоммуникации: Analog Private Line10) Сокращение: Aero Propulsion Laboratory (USAF), American President Lines, Anti-Personnel Landmines, Applied Physics Laboratory, John Hopkins University (USA), Barracks craft (USA), acute promyelocytic leukemia, airplane, automatic phase lock, Acceptable Process Level, Automatic Picture Level11) Университет: Accreditation Of Prior Learning12) Физика: Advanced Physics Laboratory13) Вычислительная техника: acute promyelocytic leukemia (Disease), A Programming Language (IBM), язык программирования APL, a programming language14) Нефть: approximate permissible level, приемлемый уровень качества при данном процессе изготовления (acceptable process level)15) Иммунология: autologous peripheral lymphocytes16) Транспорт: Airport Lights, American President Lines, Ltd.17) Фирменный знак: Airworthy Productions, L. L. C.18) Образование: Accredited Prior Learning, Automatic Progression Level19) Океанография: Applied Physics Laboratory20) Макаров: aircraft-position line21) Расширение файла: APL work space, Support module (Manugraphics APL products), A Programming Language (Mathematics)22) AMEX. Atlas Pipeline Partners, L. P.23) Профсоюзы: Alliance of Progressive Labor -
9 APL
1. acceptable process level - приемлемый уровень качества при данном процессе изготовления;2. allowable power limit - допустимый предел мощности;3. Applied Physics Laboratory - Лаборатория прикладной физики;4. authorized possession limit - допустимый предел владения;5. automatic phase lock - фазовая автоматическая синхронизация;6. automatic picture level - автоматическое регулирование уровня видеосигнала;7. average picture level - средний уровень видеосигнала; средний уровень освещённости или яркости; средний уровень яркости изображения; средняя яркость изображения;8. programming language - язык программирования АПЛ -
10 APL
допустимый предел по мощности
—
[А.С.Гольдберг. Англо-русский энергетический словарь. 2006 г.]Тематики
EN
прикладной язык программирования
(МСЭ-Т F.750).
[ http://www.iks-media.ru/glossary/index.html?glossid=2400324]Тематики
- электросвязь, основные понятия
EN
Англо-русский словарь нормативно-технической терминологии > APL
-
11 допустимая нагрузка
Англо-русский словарь технических терминов > допустимая нагрузка
-
12 load
нагрузка; груз; загрузка; заряд; тяжесть; ноша; загруженность (количество работы); закладка (заготовки в станок); pl. гружёные вагонетки; II грузить; нагружать; загружать; закладывать (деталь в приспособление); заряжать- load at first crack - load carrying capacity - load-carrying covering - load-carrying skin - load curve - load-deflection curve - load deflection of tyre - load-deformation curve - load diversity - load due to own weight - load due to snow - load due to wind - load extension curve - load increment - load-inflation table - load limit - load on axle - load out - load peak - load per unit - load per unit length - load rate - load-supporting ability of ground - load-strain diagram - load tension - load test - load testing of structures - load-time diagram - load to collapse - load-transfer device - load uniformly distributed over span - load-up - load-up condition - at no load - acting load - active load - actual load - apex load - artificial load - assumed load - asymmetric load - attach a sling to the load - bulky load - cable load - capacitive load - capacity load - carousel load - carry a load - centre-point load - centric load - centrifugal load - cantilever load - constant power load - constant torque load - dead-line load - drawbar load - dynamical load - elastic-limit load - emergency load - endurance limit load - equalization of load at conveyer pulleys - equalization of load at hoisting drums - equivalent load - extra load - fail under a load - fail under an impact load - failure load - fictitious load - filter load - frictional load - gravity load - gripper load - heaped load - heating load - heavy load - high friction load - high inertial load - hydrodynamic load - hydrostatic load - ice load - lateral load - locking load - machine load - maximum load - maximum useful load on table - midspan load - minimum load - miscellaneous load - mobile load - momentary load - most efficient load - movable load - moving load - multiaxial loads - near-ultimate load - net load - no-load - nominal load - non-central load - noncutting load - normal load - oblique load - off-center load - off-design load - operate at no-load - operating load - optimally load - optimum work load - oscillating load - out-of-balance load - outer load - outer ring load - overhauling load - overhung load - over-tolerance load - palletized work load - panel load - parabolic load - part load - pay load - paying load - peak load - permanent load - permanently acting load - permissible load - perpendicular load - pick-up load - piezoelectric load - point load - pollutant load - pollutional load - potential order load - predetermined maximum cutting load - pressure load - production load - proof load - proportional limit load - pulling load - pulsating load - punch load - quiescent load - racking load - radial load - rapidly moving load - rated load - rated load capacity - react a load - reactive load - release the load - repeated load - resist load - return load - reversal load - reversed load - rolling load - roof load - rotating inner ring load - rotating outer ring load - safe load - safe bearing load - service load - severe load - shear load - shear lock load - shearing load - shock load - side load - sightseers loading onto a bus - single load - snow load - specific tooth load - specified load - specified rated load - split load - stated load - static load - statical load - stationary load - steady load - steady-state load - steering axle load - stiffness test load - stylus load - sucker-rod load - sudden load - suddenly applied load - super-load - superimposed load - sustained load - surface load - symmetrical loads - take up the load - tangential load - target load - tensile load - tension load - terminal load - test load - test scale load - thrust load - tilting load - tooth load - torque load - torsional load - total load - towed load - traction load - tractional load - traffic load - transferred load - transient load - transmitted load - transport a load - transverse load - travelling load - trial load - ultimate load - unbalanced load - under load - uniform load - uniformly distributed load - unit load - unsafe load - useful load - variable load - varying load - vibrational load - vibratory load - waste load - water load - way-supported loads - weight load - wheel load - wide load - wind load - working load - zero load -
13 speed
скорость; число оборотов; ускорятьat a speed of Mach 3 — при скорости, соответствующей числу М=3
best (cost) cruising speed — наивыгоднейшая [экономическая] крейсерская скорость полёта
clean (configuration) stall speed — скорость срыва [сваливания] при убранных механизации и шасси
engine-out discontinued approach speed — скорость ухода на второй круг с минимальной высоты при одном неработающем двигателе
flap(-down, -extended) speed — скорость полёта с выпущенными [отклонёнными] закрылками
forward с.g. stalling speed — скорость срыва [сваливания] при передней центровке
hold the speed down — уменьшать [гасить] скорость
minimum single-engine control speed — минимальная эволютивная скорость полёта с одним (работающим) двигателем (из двух)
minimum speedln a stall — минимальная скорость срыва [сваливания]
one-engine-inoperative power-on stalling speed — скорость срыва [сваливания] при одном отказавшем двигателе
rearward с.g. stalling speed — скорость срыва [сваливания] при задней центровке
representative cruising air speed — типовая крейсерская воздушная скорость, скорость полёта на типичном крейсерском режиме
speed over the top — скорость в верхней точке (траектории, маневра)
zero rate of climb speed — скорость полёта при нулевой скороподъёмности [вертикальной скорости]
— speed up -
14 continuous current-carrying capacity
длительная пропускная способность по току
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999 г.]Тематики
- электротехника, основные понятия
EN
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
Англо-русский словарь нормативно-технической терминологии > continuous current-carrying capacity
-
15 ampacity (US)
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
Англо-русский словарь нормативно-технической терминологии > ampacity (US)
-
16 continuous current
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
непрерывный ток
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999]Тематики
- электротехника, основные понятия
EN
Англо-русский словарь нормативно-технической терминологии > continuous current
-
17 current-carrying capacity
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
предельно допустимый ток
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999 г.]Тематики
- электротехника, основные понятия
EN
прочность печатной платы к токовой нагрузке
Свойство печатной платы сохранять электрические и механические характеристики после воздействия максимально допустимой токовой нагрузки на печатный проводник или металлизированное отверстие печатной платы.
[ ГОСТ Р 53386-2009]Тематики
EN
Англо-русский словарь нормативно-технической терминологии > current-carrying capacity
-
18 load
2) нагрузка, усилие || нагружать3) кфт. заряжать5) съём ( стекломассы)6) гидр. наносы8) закладка ( заготовки в приспособление) || закладывать9) хим. вводить ( ингредиенты)11) заправка (напр. ленты) || заправлять (напр. ленту)12) вчт. загрузка (напр. программы) || загружать (напр. программу)•load per unit surface — нагрузка на единицу поверхности (охлаждения, нагрева),to apply load — прикладывать нагрузку;to carry load — нести нагрузку; выдерживать нагрузку;to cast load to side — производить поперечный перекос отвала ( бульдозера);to distribute load — распределять нагрузку;to load eccentrically — нагружать ( элемент) внецентренно, прикладывать нагрузку с эксцентриситетом;to impose load — прикладывать нагрузку;to load in bulk — грузить навалом или насыпью;to resist load — выдерживать нагрузку;to support load — нести нагрузку; выдерживать нагрузку;to sustain load — выдерживать нагрузку;to take up load — воспринимать нагрузку;to load up — нагружать;to load with film — заряжать киноплёнкой-
acceleration shock load
-
active load
-
actual load
-
additional load
-
aerodynamic load
-
air-conditioning load
-
aircraft useful load
-
allowable load
-
alternate load
-
annual maximum load
-
appliance load
-
applied bearing load
-
artificial load
-
assumed load
-
auxiliary load
-
axial load
-
axle load
-
backhaul load
-
balanced load
-
balancing load
-
ball load
-
base load
-
basic load
-
batch load
-
bed load
-
bending load
-
blast load
-
bottom load
-
brake load
-
breaking load
-
buckling load
-
buff load
-
bulk load
-
calculated load
-
capacitance load
-
car load
-
carbon burning load
-
central load
-
characteristic load
-
circulating load of impurities
-
clocked load
-
coaxial dry load
-
coaxial load
-
cold-rolling load
-
collapse load
-
combined load
-
commercial load
-
complete wagon load
-
complex load
-
compressive load
-
compressor load
-
computational load
-
concentrated load
-
condensive load
-
connected load
-
continuous load
-
controllable load
-
cooling load
-
crippling load
-
crush load
-
crushing load
-
current load
-
cutter load
-
cyclic load
-
daily load
-
dead load
-
dead-weight load
-
design load
-
design ultimate load
-
direct-acting load
-
direct load
-
discontinuous load
-
dissipative-wall waveguide load
-
distributed load with linear variation
-
distributed load
-
docking load
-
domestic load
-
down-line load
-
draft end load
-
draft load
-
drawbar load
-
dummy load
-
dust load
-
dwelling load
-
dynamic load
-
earth load
-
earthquake load
-
eccentric load
-
effective load
-
electric heating load
-
electrical load
-
electric load
-
emergency load
-
end load
-
equivalent load
-
even load
-
excessive load
-
excess load
-
explosive load
-
exponential load
-
external load
-
factored load
-
failure load
-
falling load
-
fictitious load
-
fixed load
-
flight load
-
floor load
-
fluctuating load
-
fractional load
-
fracture load
-
frozen load
-
full load
-
gradually applied load
-
gross load
-
ground load
-
guarantee load
-
gust load
-
heat load
-
heating load
-
heat-transfer load
-
high-power load
-
high-resistance load
-
hole load
-
hydraulic thrust load
-
hydrodynamic load
-
hydrostatic load
-
ice load
-
imaginary load
-
impact load
-
imposed load
-
impulsive load
-
impulse load
-
increment load
-
induced docking loads
-
inductance load
-
industrial load
-
industrial steam load
-
inertia load
-
initial program load
-
input load
-
instability load
-
installed load
-
instantaneous load
-
intermittent load
-
ionic load
-
irregular load
-
irregularly distributed load
-
jettisoned load in flight
-
knife-edge load
-
lagging load
-
landing load
-
lane load
-
latent heat load
-
lateral load
-
leading load
-
less-than-car load
-
light load
-
lighting load
-
limit load
-
limit operating load
-
linear load
-
linearly varying load
-
live load
-
low-resistance load
-
lumped load
-
maneuvering load
-
mass load
-
matched load
-
maximum safe load
-
midspan load
-
miscellaneous load
-
mobile load
-
moisture load
-
momentary load
-
movable load
-
multichannel load
-
net load
-
noncentral load
-
noncutting load
-
noninductive load
-
nonlinear load
-
nonreactive load
-
nonreflecting load
-
normal running load
-
occasionally applied load
-
off-clearance load
-
off-peak load of power plant
-
on-peak load
-
operating load
-
optimum load
-
ore load
-
oscillating load
-
oscillatory load
-
out-of-balance load
-
out-of-gage load
-
out-of-length load
-
output load
-
overall load
-
overhauling load
-
overlength load
-
overtolerance load
-
palletized load
-
palletized work load
-
part throttle load
-
partial load
-
part load
-
peak load
-
periodic load
-
permanent load
-
permissible load
-
phantom load
-
piezoelectric load
-
pilot work load
-
plant load
-
plate load
-
point load
-
pollutant load
-
pop-in load
-
power load
-
power system load
-
predetermined maximum cutting load
-
prestressing load
-
program load
-
proof load
-
pulsating load
-
punch through load
-
radial load
-
railway load
-
rated load
-
reactive load
-
real load
-
rectifier load
-
reflecting load
-
refrigeration load
-
repeated load
-
residential load
-
resistance load
-
reverse torque load
-
reversed load
-
rolling load
-
rotating bending load
-
rupturing load
-
safe load
-
salt load
-
Schottky diode load
-
secondary load
-
sediment load
-
seismic load
-
self-mass load
-
sensible heat load
-
service load
-
setting load
-
sewage load
-
shearing load
-
shear load
-
shock load
-
side load
-
single load
-
skip load
-
sleet load
-
sliding load
-
snow load
-
specific load
-
specified load
-
stalling load
-
static load
-
steady load
-
storage load
-
structural load
-
suddenly applied load
-
sudden load
-
superimposed load
-
support load
-
support yield load
-
surcharge load
-
surface load
-
sustained load
-
symmetrical load
-
temperature load
-
tensile load
-
terminal load
-
test load
-
thermal load
-
through load
-
tilting load
-
tool/workpiece load
-
top load
-
torque load
-
torsional load
-
total load
-
traction load
-
tractional load
-
traffic load
-
transistor load
-
traveling load
-
treating load
-
trial load
-
triangular load
-
true load
-
twisting load
-
ultimate load
-
unbalanced load
-
uniaxial load
-
uniform load
-
uniformly distributed load
-
unit load
-
unitized load
-
unmatched load
-
up load
-
useful load
-
variable load
-
vehicular load
-
wafer load
-
water load
-
waveguide load
-
wheel load
-
wind load
-
wing load
-
work load
-
working load
-
yield load -
19 set
1) набор; комплект- semiconductor assembly set - set of Belleville springs - set of conventional set - set of drawing instruments - set of gate patterns - set of gauge blocks - set of logical elements - set of statistical data - set of technical aids- snap set2) партия3) совокупность; множество4) установка; агрегат- desk telephone set - dial telephone set- gear set- local-battery telephone set - man-pack radio set - multi-operator welding set - sound-powered telephone set - wall telephone set5) регулировка; настройка || регулировать; настраивать6) группа; ансамбль7) класс; семейство9) схватывание || схватываться10) затвердевание || затвердевать11) крепление || закреплять12) геол. свита пород13) осадка (грунта) || оседать ( о грунте)14) радиоточка15) спорт сет16) включать, приводить в действие17) мат. множествоset closed under operation — множество, замкнутое относительно операции
- absolutely compact set - absolutely continuous set - absolutely convex set - absolutely irreducible set - absolutely measurable set - affinely independent set - affinely invariant set - algebraically independent set - almost finite set - almost full set - angular cluster set - asymptotically indecomposable set - at most denumerable set - centro-symmetric set - completely bounded set - completely continuous set - completely generating set - completely improper set - completely irreducible set - completely nonatomic set - completely normal set - completely ordered set - completely productive set - completely reducible set - completely separable set - constructively nonrecursive set - convexly independent set - countably infinite setto set aside — не учитывать, не принимать во внимание; откладывать
- cut set- cyclically ordered set - deductively inconsistent set - derived set - doubly well-ordered set - dual set of equations - dynamically disconnected set - effectively enumerable set - effectively generating set - effectively nonrecursive set - effectively simple set - enumeration reducible set - finely perfect set - finitely definite set - finitely measurable set- flat set- full set- fully reducible set - functionally closed set - functionally complete set - functionally open set - fundamental probability set - generalized almost periodic set- goal set- internally stable set- knot set- left directed set - left normal set - left-hand cluster set - linearly ordered set - local peak set - locally arcwise set - locally closed set - locally compact set - locally connected set - locally contractible set - locally convex set - locally finite set - locally invariant set - locally negligible set - locally null set - locally polar set - locally polyhedral set - metrically bounded set - metrically dense set - multiply ordered set - nearly analytic set - nearly closed set - nonvoid set - normally ordered set- null set- open in rays set - partitioned data set- peak set- pole set- positively homothetic set- pure set- radially open set - rationally independent set - recursively creative set - recursively indecomposable set - recursively isomorphic set - recursively productive set - regularly convex set - regularly situated sets - relatively closed set - relatively compact set - relatively dense set - relatively interpretable set - relatively open set - right normal set - right-hand cluster set- scar set- sequentially complete set - serially ordered set - set of elementary events - set of first category - set of first kind - set of first species - set of possible outcomes - set of probability null - set of second category - set of second species - shift invariant set - simply connected set - simply ordered set - simply transitive set- skew set- star set- strongly bounded set - strongly closed set - strongly compact set - strongly connected set - strongly convex set - strongly dependent set - strongly disjoint sets - strongly enumerable set - strongly independent set - strongly minimal set - strongly polar set - strongly reducible set - strongly separated set - strongly simple set - strongly stratified set- tame set- tautologically complete set - tautologically consistent set - tautologically inconsistent set- test set- thin set- tie set- time set- totally disconnected set - totally imperfect set - totally ordered set - totally primitive set - totally unimodular set - totally unordered set - truth-table reducible set - uniformly bounded set - uniformly continuous set - uniformly convergent set - uniformly integrable set - uniformly universal set - unilaterally connected set- unit set- vacuous set- void set- weakly compact set - weakly convex set - weakly n-dimensional set - weakly stratified set - weakly wandering set - well chained set - well founded set - well measurable set - well ordering set - well quasiordered set -
20 load
1) нагрузка || нагружать2) груз3) загрузка || загружать4) заряд || заряжать5) заправка ( перфоленты) || заправлять ( перфоленту)6) засаливать ( шлифовальный круг)•to gantry load — загружать (напр. станок) с помощью портального устройства
to magazine load — загружать, автоматически загружать (напр. детали) с помощью магазина
- active loadto robotically load — загружать роботом (напр. станок)
- allowable load
- alternating load
- artificial load
- axial load
- axle load
- balanced load
- basic load
- bearable load
- bearing load
- bending load
- between-centers load
- brake load
- breaking load
- carousel load
- changing load
- chip load per revolution
- chip load
- combined load
- compression load
- concentrated load
- constant power load
- constant torque load
- continuous load
- corner load
- crane load
- critical load
- crushing load
- cutter load
- cutting load
- dead load
- design load
- discontinuous load
- distributed load
- dynamic load
- dynamic tooth load
- eccentric load
- edge load
- endurance limit load
- equivalent load
- Euler buckling load
- Euler load
- even load
- excess load
- external load
- fictitious load
- floor-stacked loads
- fluctuating load
- friction load
- frictional load
- full load
- gradually applied load
- gravity load
- gripper load
- half load
- heavy load
- impact load
- impulsive load
- initial load
- inner ring load
- instantaneous load
- intermittent load
- light load
- limiting load
- linear load
- live load
- localized load
- locking load
- machine load
- maximum useful load on table
- momentary load
- movable load
- moving load
- multiaxial loads
- net load
- noncutting load
- normal load
- oblique load
- off-center load
- optimum work load
- order loads
- outer load
- outer ring load
- overhauling load
- overhung load
- over-tolerance load
- pallet table load
- palletized work load
- peak load
- permissible load
- perpendicular load
- piezoelectric load
- point load
- potential order load
- predetermined maximum cutting load
- production load
- proportional limit load
- pulling load
- pulsating load
- quiescent load
- radial load
- rapidly moving load
- rated load
- reactive load
- reversal load
- rolling load
- rotating inner ring load
- rotating outer ring load
- safe load
- service load
- shear load
- shearing load
- shock load
- side load
- single load
- specific tooth load
- specified rated load
- stated load
- static load
- stationary load
- steady load
- steady-state load
- stylus load
- suddenly applied load
- supervisor's work load
- surface load
- tangential load
- target load
- tensile load
- tension load
- test load
- test scale load
- thrust load
- tilting load
- tool/workpiece load
- tooth load
- torque load
- tractional load
- transmitted load
- transverse load
- ultimate load
- unbalanced load
- uniformly distributed load
- unit load
- useful load
- variable load
- varying load
- way-supported loads
- wheel load
- working load
- zero loadEnglish-Russian dictionary of mechanical engineering and automation > load
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