I want to go through the case of a solid-solid equilibrium.

固相固相平衡。

youdao

The point at which the solid and the liquid are in equilibrium is called the freezing point.

固体和液体的平衡点叫做冰点。

《牛津词典》

And turning the crank at equilibrium, being equal between the solid phase and the liquid phase.

在平衡态固相和液相的化学势相等，固相和气相一样。

youdao

So the triple point is liquid solid, gas, all in equilibrium.

气态，固态，三相平衡,你可能会想。

麻省理工公开课 - 热力学与动力学课程节选

and added a structure of math upon it, to build this edifice, which is a very solid edifice of thermodynamics as a science of equilibrium systems.

了这座热力学的坚固大厦，这是一门，平衡态系统,的科学。

麻省理工公开课 - 热力学与动力学课程节选

And the triple point of water is 16K that temperature and pressure - there's a unique temperature and pressure where water exists in equilibrium between the liquid phase, the vapor phase, and the solid phase.

与水的三相点,我们定义它为273。,水的三相点,是一个特定的温度和压强,可以使水的液态，气态和固态三相共同达到平衡，三相点是液态。

麻省理工公开课 - 热力学与动力学课程节选