b It's pretty simple zeroth law says that if a and b it doesn't exactly say that but it implies this.

它很简单，第零定律指出如果a和,这不是第零定律的原话,但其意义是这样的。

麻省理工公开课 - 热力学与动力学课程节选

In order to have an electron in a stationary orbit this implies standing wave.

为了在静止的轨道中拥有电子,驻波是不可少的。

麻省理工公开课 - 固态化学导论课程节选

And that implies that since the quantity we want is given by this quantity, which is zero times a constant, the quantity we want is also zero.

因为我们需要的量,是由这个量乘以一个常数，因为这个量是零，因此我们需要的量也是零。

麻省理工公开课 - 热力学与动力学课程节选