So we're going to start with a mole of gas, V at some pressure, some volume, T temperature and some mole so V, doing it per mole, and we're going to do two paths here.

假设有1摩尔气体，具有一点的压强p，体积，温度，我们将让它，经过两条不同的路径。

麻省理工公开课 - 热力学与动力学课程节选