We've used the fundamental equations that are hiding down here, out of sight but never out of mind.

我们利用了,写在这里的基本方程，虽然没有注意它但却时时刻刻记者它。

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

Or, if we know the equation of state from a model, ideal gas, van der Waal's gas, whatever, u now we can determine u.

或者如果我们知道模型的状态方程,比如理想气体，范德瓦尔斯气体，无论什么，我们就可以利用状态方程得到内能。

麻省理工公开课 - 热力学与动力学课程节选

V So this nR over V. And then, using the relation again, T we can just write this as p over T.

恒定温度下的dp/dT等于nR除以，再次利用状态方程，可以把它写成p除以。

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