OK, this is only true for an ideal gas, and we went through that mathematically where the, with a chain rule.

这一关系只对理想气体成立，上节课我们,用链式法则推导出了这一关系。

麻省理工公开课 - 热力学与动力学课程节选

v We don't know what it is yet. In order to change this from a p to a V, you have to use the chain rule. So let's use the chain rule.

为了把这里的p变成,我们需要利用链式法则,好，让我们使用链式法则。

麻省理工公开课 - 热力学与动力学课程节选