So, and of course, you know, keeping entropy as a fixed variable for a system like that is extremely cumbersome.
所以,对这样的系统要求它们的熵保持恒定,和一个非常笨拙做法。
On the other hand, temperature, volume and pressure are variables that are much easier in the lab to keep constant.
另一方面,温度,体积和压强,在实验室中比较容易保持恒定。
It's in the nature of things to go at a constant velocity.
能保持恒定速度是物体的固有性质
SV And this is, of course, with constant S V.
当然在这里是保持恒定的。
Experimentally, though, that's not such an easy situation to arrange.
但是保持熵恒定在实验上很难实现,当然保持温度。
Is never going to be the most convenient one experimental.
试验中要保持熵恒定,是非常不方便的。
If I keep the pressure constant.
当我保持压强恒定。
We said, "Let's take, for the simplest case that we can possibly imagine, namely a particle moving in one dimension along the x-axis with a constant acceleration a.
我们说过,"考虑我们可以想象的最简单的情况,即质点在一维空间运动,沿着 x 轴且保持恒定加速度 a
P This is constant S and p.
在这里保持恒定的S和。
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