得时

There are mainly two statistic methods;one is that the heat capacity of solid is statistically calculated when the solid atomic system is in the quasi-independent particle system,this kind of methods is known as Einstein theory.

一种统计方法是：将固体原子系统看作近独立粒子系统，统计运算固体热容随温度的变化，称为爱因斯坦理论；另一种方法则是：应用系综统计理论，统计运算固体热容随温度的变化情况，称为德拜理论。

I'm just a poor boy, I need no sympathy.

我只是一个小孩子，我不需要同情。