那么系统能量仅仅，是这个平均值乘以总分子数。
And then the system energy would simply be the total number of molecules times that.
在这个过程中，参与的分子数很少，通常有很大的波动。
The number of molecules is often small so that large fluctuations can occur.
在这个过程中，参与的分子数很少，通常有很大的波动。
The number of molecules is often small so that large fluctuations can occur.
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