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

Now, it's also very useful to look at some of the relations that come out of these fundamental equations.

我们接下来可以考察,从这些基本方程中得出的一些方程。

麻省理工公开课 - 热力学与动力学课程节选

And we can do that by going through and deriving What we'll call the fundamental equations of thermodynamics.

通过推导,所谓的,基本热力学方程可以做到这一点。

麻省理工公开课 - 热力学与动力学课程节选