-
1 ultimate pressure of vacuum pump
предельное остаточное давление вакуумного насоса
Давление, к которому асимптотически стремится давление в стандартизованном испытательном объеме без выпуска газа и при нормально работающем насосе.
[ ГОСТ 5197-85]Тематики
EN
DE
FR
Англо-русский словарь нормативно-технической терминологии > ultimate pressure of vacuum pump
-
2 pressure
давление; сжатие; прессование; герметичныйboundary layer induced pressure — давление, обусловленное пограничным слоем
computer unit output pressure — давление на выходе решающего гидроусилителя (автомата загрузки бустерного управления)
dump the pressure to return — стравливать [перепускать] давление в отводящую магистраль
forward (control) stick pressure — усилие (на ручке) в направлении «от себя», давящее [толкающее] усилие (на ручке)
partial pressure suit capstan pressure — давление в натяжных пневмокамерах высотного компенсирующего костюма
relax forward pressure on the stick — уменьшать усилие на ручке в направлении «от себя»: отпускать ручку назад
relieve the back pressure on the stick — уменьшать усилие на ручке в направлении «на себя»; отпускать ручку вперёд
saturated vapor pressure — упругость насыщающего пара; давление насыщенного пара
-
3 pressure
1) давление; напор2) сжатие; прижатие; прессование || сжимать; прижимать; прессовать3) эл. электродвижущая сила, эдс4) противодействие силе, противодействие прилагаемой силе•- abutment pressure
- admission pressure
- air pressure
- air-supply pressure
- alarm pressure
- assembling pressure
- atmospheric pressure
- authorized pressure
- axial pressure
- back pressure
- background pressure
- balancing pressure
- barometric pressure
- bearing pressure
- chip pressure at the cutting edge
- chuck pressure
- chucking pressure
- circuit pressure
- clamping pressure
- closing pressure
- compacting pressure
- constant pressure
- contact pressure
- continuous longitudinal spring pressure
- control pressure
- cutting pressure
- cycle pressure
- delivery pressure
- differential pressure
- discharge line pressure
- discharge pressure
- end pressure
- equivalent nitrogen pressure
- excess pressure
- exhaust pressure
- falling pressure
- feed pressure
- feeding pressure
- fluid pressure
- full overflow pressure
- gage pressure
- grinding pressure
- gripping pressure
- hold-down pressure
- hydraulic pressure
- hydrostatic pressure
- incoming pressure
- indicated pressure
- inlet pressure
- interface pressure
- inward radial spring pressure
- lateral pressure
- lifting pressure
- line pressure
- localized pressure
- low pilot pressure
- low pilot signal pressure
- maximum backing pressure
- maximum pressure
- maximum tolerable pressure
- maximum working pressure
- noise pressure
- opening pressure
- operating pressure
- outlet pressure
- over-air pressure
- partial pressure
- permissible pressure
- pilot pressure
- pilot signal pressure
- pneumatic pressure
- pocket pressure
- preload pressure
- pressure of contact
- process system pressure
- pump pressure
- pushing pressure
- rated pressure
- regulating pressure
- residual pressure
- retaining pressure
- reverse pressure
- rising pressure
- sealing pressure
- service pressure
- side pressure
- sound pressure
- spring pressure
- standard pressure
- starting pressure
- steady-state pressure
- supply pressure
- surplus pressure
- tool pressure
- transient pressure
- ultimate pressure
- unclamping pressure
- upward pressure
- vacuum pressure
- vacuum-gage pressure
- working pressure
- workpiece-retaining pressureEnglish-Russian dictionary of mechanical engineering and automation > pressure
-
4 Swan, Sir Joseph Wilson
[br]b. 31 October 1828 Sunderland, Englandd. 27 May 1914 Warlingham, Surrey, England[br]English chemist, inventor in Britain of the incandescent electric lamp and of photographic processes.[br]At the age of 14 Swan was apprenticed to a Sunderland firm of druggists, later joining John Mawson who had opened a pharmacy in Newcastle. While in Sunderland Swan attended lectures at the Athenaeum, at one of which W.E. Staite exhibited electric-arc and incandescent lighting. The impression made on Swan prompted him to conduct experiments that led to his demonstration of a practical working lamp in 1879. As early as 1848 he was experimenting with carbon as a lamp filament, and by 1869 he had mounted a strip of carbon in a vessel exhausted of air as completely as was then possible; however, because of residual air, the filament quickly failed.Discouraged by the cost of current from primary batteries and the difficulty of achieving a good vacuum, Swan began to devote much of his attention to photography. With Mawson's support the pharmacy was expanded to include a photographic business. Swan's interest in making permanent photographic records led him to patent the carbon process in 1864 and he discovered how to make a sensitive dry plate in place of the inconvenient wet collodian process hitherto in use. He followed this success with the invention of bromide paper, the subject of a British patent in 1879.Swan resumed his interest in electric lighting. Sprengel's invention of the mercury pump in 1865 provided Swan with the means of obtaining the high vacuum he needed to produce a satisfactory lamp. Swan adopted a technique which was to become an essential feature in vacuum physics: continuing to heat the filament during the exhaustion process allowed the removal of absorbed gases. The inventions of Gramme, Siemens and Brush provided the source of electrical power at reasonable cost needed to make the incandescent lamp of practical service. Swan exhibited his lamp at a meeting in December 1878 of the Newcastle Chemical Society and again the following year before an audience of 700 at the Newcastle Literary and Philosophical Society. Swan's failure to patent his invention immediately was a tactical error as in November 1879 Edison was granted a British patent for his original lamp, which, however, did not go into production. Parchmentized thread was used in Swan's first commercial lamps, a material soon superseded by the regenerated cellulose filament that he developed. The cellulose filament was made by extruding a solution of nitro-cellulose in acetic acid through a die under pressure into a coagulating fluid, and was used until the ultimate obsolescence of the carbon-filament lamp. Regenerated cellulose became the first synthetic fibre, the further development and exploitation of which he left to others, the patent rights for the process being sold to Courtaulds.Swan also devised a modification of Planté's secondary battery in which the active material was compressed into a cellular lead plate. This has remained the central principle of all improvements in secondary cells, greatly increasing the storage capacity for a given weight.[br]Principal Honours and DistinctionsKnighted 1904. FRS 1894. President, Institution of Electrical Engineers 1898. First President, Faraday Society 1904. Royal Society Hughes Medal 1904. Chevalier de la Légion d'Honneur 1881.Bibliography2 January 1880, British patent no. 18 (incandescent electric lamp).24 May 1881, British patent no. 2,272 (improved plates for the Planté cell).1898, "The rise and progress of the electrochemical industries", Journal of the Institution of Electrical Engineers 27:8–33 (Swan's Presidential Address to the Institution of Electrical Engineers).Further ReadingM.E.Swan and K.R.Swan, 1968, Sir Joseph Wilson Swan F.R.S., Newcastle upon Tyne (a detailed account).R.C.Chirnside, 1979, "Sir Joseph Swan and the invention of the electric lamp", IEEElectronics and Power 25:96–100 (a short, authoritative biography).GWBiographical history of technology > Swan, Sir Joseph Wilson
См. также в других словарях:
vacuum technology — Introduction all processes and physical measurements carried out under conditions of below normal atmospheric pressure. A process or physical measurement is generally performed in a vacuum for one of the following reasons: (1) to remove the … Universalium
Vacuum — This article is about empty physical space or the absence of matter. For other uses, see Vacuum (disambiguation). Free space redirects here. For other uses, see Free space (disambiguation). Pump to demonstrate vacuum In everyday usage, vacuum is… … Wikipedia
Sorption pump — The sorption pump is a vacuum pump that creates a vacuum by adsorbing molecules on a very porous material like molecular sieve which is cooled by a cryogen, typically liquid nitrogen. The ultimate pressure is about 10 2 mbar. With special… … Wikipedia
предельное остаточное давление вакуумного насоса — Давление, к которому асимптотически стремится давление в стандартизованном испытательном объеме без выпуска газа и при нормально работающем насосе. [ГОСТ 5197 85] Тематики вакуумная техника EN ultimate pressure of vacuum pump DE Enddruck einer… … Справочник технического переводчика
building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… … Universalium
Ocean thermal energy conversion — Temperature differences between the surface and 1000m depth in the oceans Ocean Thermal Energy Conversion (OTEC) uses the difference between cooler deep and warmer shallow or surface ocean waters to run a heat engine and produce useful work,… … Wikipedia
environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations … Universalium
angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction any member of the more than 300,000 species of flowering plants (division Anthophyta) … Universalium
Cryofixation — is a technique for fixation or stabilisation of biological materials as the first step in specimen preparation for electron microscopy. Typical specimens for cryofixation include small samples of plant or animal tissue, cell suspensions of… … Wikipedia
cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… … Universalium
international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… … Universalium