"And I only hope,and I express good wishes, that your friends and brothers in Nigeria,they will do us the same superb job that Egypt has done in the U-20, and they should do it in the Under-17, and it will be at the same level, the right African level."

VOA: standard.2009.10.22

You just change volume to pressure and basically you're looking at enthalpy under a constant -- anything that's done at a constant volume path with energy, there's the same thing happening under constant pressure path for enthalpy.

可以看到这就是把体积换成了压强,一般我们都是在一种恒定状态下,考虑焓的，任何在恒容条件下,能伴随能量变化的东西，也在恒压条件下伴随焓同样地变化,所以你可以经常。

麻省理工公开课 - 热力学与动力学课程节选