So that you could see that for the ideal gas, u would not be a function of volume, but only of temperature.

所以我们可以看到对理想气体，内能不依赖于体积，而仅仅是温度的函数。

麻省理工公开课 - 热力学与动力学课程节选

They only depend on the state the system is in.

态函数是不变的，它们只依赖于。

麻省理工公开课 - 热力学与动力学课程节选