The place seems wild. At the same time, there is a feeling of calm order.

VOA: special.2009.11.16

So if you want to on an exam, you can just write this down quickly at the beginning and refer to it as you're filling up your electron configurations, but also if you look at the periodic table it's very clear as you try to fill it up that way that the same order comes out of that.

如果你们想要在考试中，你们要在开始时快速地把这个写下来,然后在填充电子构型,的时候参考它，但是如果你们看着周期表,它就非常清楚了当你们将它用从那产生的,同样的顺序来填充。

麻省理工公开课 - 化学原理课程节选

And the point is that the second derivative of A, with respect to V and T in this order is the same as the second derivative of a with respect to T and V in this order.

问题的关键在于A的二阶导数，对V和T以这样一个顺序求导,和对T和V以这样一个顺序,求导是一样的。

麻省理工公开课 - 热力学与动力学课程节选