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。
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。
The basic idea in solving these equations and integrating is you find one answer, so then when you take enough derivatives, the function does what it's supposed to do.
解决这类方程以及积分的基本思想就是,你求出一个解,然后进行多次求导,求导的结果就满足条件
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。
You realize it's very subtle, because the very first thing in that equation, which is m, has not yet been defined.
你会觉得这很微妙,因为方程里最基本的量 也就是 m,还没有人给它下定义
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