这是气体——液体共存曲线。

And the a gas liquid coexistent line.

youdao

所以这是气体的摩尔体积。

So this is the molar volume of the gas.

youdao

这是气体中a的摩尔分数。

Well it's the mole fraction of a in the gas.

youdao

For a real gas it depends on more than the temperature STUDENT: Are there any other constraints similar to that .

而对实际气体，这是不对的,它的内能不仅仅依赖于温度,学生：有其他,类似的约束吗？

麻省理工公开课 - 热力学与动力学课程节选

dT/dp is mu JT. So for a real gas like air, this is a positive number. It's not zero.

所以对于像空气这样的真实气体，这是一个正数，不等于零。

麻省理工公开课 - 热力学与动力学课程节选

This is the fact that we occupy a finite volume in space, because they're little hard spheres in this molecule.

这是由气体分子在空间中,占据有限体积造成的,因为事实上它们是硬的小圆球。

麻省理工公开课 - 热力学与动力学课程节选