• His most famous invention was the vacuum tube,or electron tube.

    VOA: special.2010.01.31

  • This is titanium sponge that comes out of the bottom of this reactor, and it subsequently re-melted in a vacuum arc furnace.


    麻省理工公开课 - 固态化学导论课程节选

  • And, in between, there is void, which is very similar to how we would describe vacuum.


    麻省理工公开课 - 固态化学导论课程节选

  • The Henry Milker is a hand-operated vacuum pump.

    VOA: special.2010.07.20

  • And so an experiment said the gas didn't increase its temperature when it expanded the vacuum.


    麻省理工公开课 - 热力学与动力学课程节选

  • The module called Kibo or "Hope" in Japanese will allow astronauts to conduct experiments that involve exposing materials to the vacuum of space.

    VOA: standard.2009.07.16

  • So we now see that the traditions in the Bible did not come out of a vacuum.


    耶鲁公开课 - 旧约导论课程节选

  • The hope is that it will not take too long, for fear a power vacuum could develop.

    VOA: standard.2010.03.07

  • Then here's the favorite of all time, vacu-pants, attached via the hose to your vacuum cleaner.


    耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

  • Because of the oil-rich bran layer, it spoils quickly if not refrigerated or stored in vacuum-sealed bags.

    VOA: standard.2010.06.25

  • What we need to do is get rid of the Coulomb tag that we have - that's how we measure our electron charges - charge, and so we use this epsilon nought quite often, this permativity constant of a vacuum to make that conversion.


    麻省理工公开课 - 化学原理课程节选

  • The power vacuum is likely to continue for some time. Election resultsmust be finalized before a government can be formed, the vote is being recounted.

    VOA: standard.2010.05.10

  • And so we have gas and we have vacuum.


    麻省理工公开课 - 热力学与动力学课程节选

  • He says the move will both prevent a power vacuum and respect the constitution.

    VOA: standard.2009.03.29

  • There is the permittivity vacuum. It is all up there.


    麻省理工公开课 - 固态化学导论课程节选

  • The politicians internal divisions have led to fears that a political vacuum could give Sunni militants a chance to revive the sectarian violence that roiled the nation in 2006 and 2007.

    VOA: standard.2010.04.04

  • I'm going to create a vacuum.


    麻省理工公开课 - 热力学与动力学课程节选

  • Yes,we have indeed a certain timetable for (U.S.) withdrawal from the population centers, from the city-centers, but we are doing our utmost and we are coordinating very closely with the multinational forces to ensure there is no vacuum,".

    VOA: standard.2009.04.25

  • When you expand a real gas into vacuum, the temperature goes down.


    麻省理工公开课 - 热力学与动力学课程节选

  • well since the gas is expanding into vacuum no work is done.


    麻省理工公开课 - 热力学与动力学课程节选

  • In addition to that, we have that epsilon nought value, remember that's the permittivity constant in a vacuum, and basically that is what we use as a conversion factor to get from units. We don't want namely coulombs to units, we want that will allow us to cancel out in this equation.


    麻省理工公开课 - 化学原理课程节选

  • This is the permittivity of vacuum.


    麻省理工公开课 - 固态化学导论课程节选

  • Epsilon zero is the permittivity of vacuum.


    麻省理工公开课 - 固态化学导论课程节选

  • In other words, this is vacuum.


    麻省理工公开课 - 热力学与动力学课程节选


vacuum pump [机]真空泵

in a vacuum 似在真空中  

high vacuum 高度真空,高真空

vacuum distillation 真空蒸馏

vacuum cleaner 吸尘器;真空吸尘器;真空清洁器

vacuum system 真空系统

vacuum degree 真空度

vacuum drying 真空干燥

vacuum packaging 真空包装

vacuum furnace 真空炉;退火炉

vacuum filter 真空滤器

vacuum tube 真空管;电子管

vacuum packing 真空包装

vacuum circuit breaker 真空断路器

vacuum equipment 真空设备

vacuum chamber 真空室;压力室

vacuum evaporation 真空蒸发;真空蒸镀;真空涂膜

vacuum heat treatment 真空热处理;化学热处理

vacuum interrupter 真空断续器;真空隔离开关

vacuum forming 真空成型

- 来自原声例句

进来说说原因吧 确定

进来说说原因吧 确定