And so they lay. 1853. Let's get Angstrom up on the board here since he did the work.

因此在183年这些就存在了，让我们把阿姆斯特朗,写到黑板上来，鉴于他做的这个工作。

麻省理工公开课 - 固态化学导论课程节选

Before I move on, I'm just going to put on the board another cycle, and I'm going to urge you to work through that on your own.

在我继续之前，我要在黑板上,画另一个循环，我希望你们,能自己去推导它，它已经被详尽地推导过了。

麻省理工公开课 - 热力学与动力学课程节选