That's a liquid, at some pressure p.

这是液体，出于一定压强下的。

youdao

PA Some partial pressure, p sub A, temperature T.

在温度T下的分压为。

youdao

Normally I couldn't do that Vdp because this term would have p dV plus V dp, but we've specified the pressure is constant, so the dp part is zero.

一般情况下我不能这么写,因为这一项会包含pdV和，但是我们已经假定压强为常数，所以包含dp的部分等于零。

youdao

pV=RT dT here because the pressure is constant, dV=RdT/p so dV is equal to R over p dT.

因为对1摩尔气体有，于是。

麻省理工公开课 - 热力学与动力学课程节选

Because what we've done is we forced p, pressure here, to be equal to the external pressure.

因为这里我们让内部的压强，等于外部的压强。

麻省理工公开课 - 热力学与动力学课程节选

It's not constant pressure, because we have a delta p going on. It's not constant volume either.

也不是恒容，这个限制,是这个实验的限制。

麻省理工公开课 - 热力学与动力学课程节选

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