When we plug it into equations we just use the number, e So, let's think of what we could have if we have two electrons in a helium atom that are shielded in two extreme ways.
当我们将它带入方程时我们,只用它的数字，在那里是假定的。，the，e，is，assumed，there。,所以我们来想想如果在一个氦原子中,有两个以两种极端形式被屏蔽的电子,我们会得到什么。
Short term optimization of hydroelectric generation is a procedure problem and should be solved by the variational method of functional extreme value, i. e. , the famous Eulerian equation.
短期水电优化是过程问题，应该用泛函极值的变分法即欧拉方程求解。
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