So now let's go around the cycle and just compare notes on what happens to the thermodynamic quantities as we do that.

现在让我们推导一下这个循环,比较一下这个过程中,热力学性质的变化。

麻省理工公开课 - 热力学与动力学课程节选

It turns out that when you're talking about macroscopic properties of matter, you don't need very many variables to describe the system completely thermodynamically.

实际上,当你谈及物质的宏观性质时，你并不需要很多变量才能从热力学上,完整地描述这个系统，’

麻省理工公开课 - 热力学与动力学课程节选

If it's not, then you're going to have trouble describing it using thermodynamic properties.

如果它不是，那么用热力学性质去,描述它就要有麻烦了。

麻省理工公开课 - 热力学与动力学课程节选