And so that led us to the definitions of other energy quantities, the Helmholtz and Gibbs free energy.

这就要求我们定义,其他的和能量相似的物理量，亥姆赫兹和吉布斯自由能。

麻省理工公开课 - 热力学与动力学课程节选

The Gibbs free energy. Notice, we could also write, let's rewrite that.

吉布斯自由能，注意，我们还可以这样写，重写一下。

麻省理工公开课 - 热力学与动力学课程节选

So again with the Gibbs free energy, now I see how to determine, if I change the pressure, if I change the temperature by some modest amount, how much is the Gibbs free energy going to change?

再一次通过吉布斯自由能，我知道当我，适当的改变压强和，温度的时候，吉布斯自由能如何变化？

麻省理工公开课 - 热力学与动力学课程节选

It's the state that has the lowest Gibbs free energy.

它具有最小的吉布斯自由能。

麻省理工公开课 - 热力学与动力学课程节选

Where the Gibbs free energy, TS u plus pV minus TS is H minus TS.

吉布斯自由能等于，内能u加上pV减去TS，也是自由焓H减去。

麻省理工公开课 - 热力学与动力学课程节选

And that's why the Gibbs free energy is just so enormously important.

吉布斯自由能G在平衡态取得最小值,吉布斯自由能是最重要的。

麻省理工公开课 - 热力学与动力学课程节选