At a coexistence line, then the number of phases equals to two.
在共存曲线上,一共有两个相。
The sentence contains two ideas and treats then as equals.
这个句子包含着两层意思,并对这两层意思作了同等的处理。
And if that is the energy to go from n equals one n=2 this is the amount of energy that has to be left as kinetic energy of the electron.
如果这个能量是从n=1到,然后,to,n,equals,two,then,这些能量,会作为电子的动能,被消耗掉。
And then, if we go to n equals two, what happens?
然后,如果我们让n等于2,会是什么情况?
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