Often, for a particular state change, it is easy to calculate two of these, but not the third.

对于一些特定的状态变化，它们中的两个很好计算，但是第三个往往不容易计算。

麻省理工公开课 - 热力学与动力学课程节选

That is, in terms of equations of state. For any material Then we would really be able to essentially calculate anything. Anything thermodynamic.

换句话说，利用任何一种物质的状态方程,我们就能够实质上,计算所有物理量，所有热力学量。

麻省理工公开课 - 热力学与动力学课程节选

Make sure you have batteries that are in a good state of charge in your calculator.

确保你的计算器电池,处在一个良好的状态。

麻省理工公开课 - 固态化学导论课程节选

This is going to be probably a homework at some point to do this. For now, let's take it for granted. Let's take it for granted that we know how to calculate this derivative from an equation of state like this.

这可能是将来的一个课后作业,现在，请把这当成理所当然的，理所当然地认为我们,知道怎样从一个状态,方程计算这样的微分式。

麻省理工公开课 - 热力学与动力学课程节选

Certainly in principle we know how to calculate this and other stuff for a change in state of this sort, for lots of changes of state.

的确原则上我们可以对某个状态变化,计算这些物理量,或者其他物理量，对其他的变化也可以做相同的计算。

麻省理工公开课 - 热力学与动力学课程节选

Just like u, we'd like to be able to express it in a way that allows us to calculate what happens only from equation of state data.

就像内能u一样，我们希望能够利用状态方程的数据,计算出其表达式,这些表达式能方便我们说出即将发生的过程。

麻省理工公开课 - 热力学与动力学课程节选

We already did that. OK, dH/dT constant pressure is Cp. That was easy one.

我们已经做过这个计算了，好的，在恒压,状态下的偏H偏T就是Cp，这个很简单。

麻省理工公开课 - 热力学与动力学课程节选

OK, in a few weeks, you're going to find out that we can calculate dH/dp from this equation of state, and you're going to find p out that dH/dp from that equation of state b-a/RT is proportional to b minus a over RT.

好，在接下来几个星期里,你们将知道从这个状态方程,可以计算出偏H偏p，并且你们会发现,从这个状态方程得到的偏H偏,正比于。

麻省理工公开课 - 热力学与动力学课程节选