self y Notice what I also do here, I create self dot y, give it a value, and then, oh cool, I can also set up what's the radius and angle for this point, by just doing a little bit of work.

我创建了，然后给它赋值，然后，噢太酷了，通过做一点额外的工作,就可以得到点的半径和角度了，好，实际上如果。

麻省理工公开课 - 计算机科学及编程导论课程节选

I want to cool a gas with a Joule-Thomson experiment, what temperature do I have to be at?

给气体降温时,需要到达什么温度？

麻省理工公开课 - 热力学与动力学课程节选

All right, this is what's called a recurrence relation, there are actually cool ways to solve them. We can kind of eyeball it.

好，这就是所谓的递归关系,也就是解决问题的相当好的办法,我们可以来看看。

麻省理工公开课 - 计算机科学及编程导论课程节选