So what this says is the efficiency of any reversible engine T1 has to be one minus T2 over T1.

这就是说,任何可逆热机的效率都是,负T2除以。

麻省理工公开课 - 热力学与动力学课程节选

So now let's look at the efficiency of our irreversible engine.

再来看看,不可逆热机的效率。

麻省理工公开课 - 热力学与动力学课程节选

We've formulated one particular kind of engine, and seen how we can analyze what it does, come up with relations that seem of value for efficiency and other quantities.

这是一个很典型的热机，我们来分析它是怎么工作的，然后得到效率和其它一些,有用物理量之间的关系。

麻省理工公开课 - 热力学与动力学课程节选