So, you might have noticed that we will have spent about 6 and 1/2 lectures just getting to the point where we have only one electron, so we're only up hydrogen so far.
你们可能已经注意到了,我们已经花了6周半的时间,来仅仅是讲到单电子问题的情形,我们现在只研究氢原子。
But just to hammer home this point, if I could, we have time for one awkward demonstration.
但是这个时候为了再三强调到彻底的了解,如果可以的话,我们还有时间做一个不太好的示范。
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