As the feed stream flows through the choke, the resulting J-T expansion and cooling causes some gas and most of the water vapor to liquefy.

当原料气流过节流件时，产生焦耳-汤姆逊膨胀及降温，使部分气体和大部分水蒸汽液化。

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Based on a T-bus connection system, the components are hot-swappable and allow easy system expansion.

基于T -总线的连接系统，其部件都是很容易扩展的热交换部件。

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"I don't think the coast is clear. I don't think there's any guarantee that the recovery is going to evolve into a self sustaining economic expansion.

VOA: standard.2010.01.29

I don't know what the pressure is doing in there, doing that expansion.

我不知道这个过程中,内部气体的压强。

麻省理工公开课 - 热力学与动力学课程节选

Real refrigerators actually work with liquids that go into gases so use the latent heat of the liquid, so it doesn't really work like the Joule-Thomson expansion. So this is real.

液体变成气体来工作,以运用液体的潜热，所以这不是,真正像焦耳-汤姆逊膨胀一样工作,这是真实的气体，不像焦耳。

麻省理工公开课 - 热力学与动力学课程节选

Importantly, it doesn't include expansion of unemployment insurance and food stamps, something Democrats wanted.

FORBES: Magazine Article

President Boris Yeltsin reluctantly went along only after it became obvious he couldn't stop NATO expansion.

CNN: AllPolitics - Big Issues Confront NATO At Madrid Summit

Subway Time won't satisfy certain travelers as-is: it doesn't provide directions, and the earliest expansion to additional routes won't happen until the L line's information is linked up in six to 12 months.

ENGADGET: MTA app for iPhone offers New Yorkers real-time subway arrivals, a small dose of relief