How do you measure the volume of a gas?

你如何计量气体的体积？

《牛津词典》

It is well known that when gas is cooled at a constant pressure its volume decreases.

众所周知，当气体在定压下冷却时，它的体积减小。

youdao

So this is the molar volume of the gas.

所以这是气体的摩尔体积。

youdao

He says that a new pipeline will be laid between Mindana and Bazargan, near the Turkish border, to increase the volume of Iranian gas sold to Turkey.

VOA: standard.2010.07.23

That for an ideal gas it has to be the case that there's no volume dependence of the energy.

我们可以直接推导这个结果,即证明对理想气体，内能和气体体积无关。

麻省理工公开课 - 热力学与动力学课程节选

You're allowed Cv comes out here for this adiabatic expansion, which is not a constant volume only because this is always true for an ideal gas.

绝热过程写下,这个式子是因为它对理想气体都成立，并没有用到等容过程的条件,只用了理想气体的条件。

麻省理工公开课 - 热力学与动力学课程节选

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