And so it has what? In contrast to the sigma, it has a nodal plane containing both nuclei.
这是什么,和sigma相反,它是包覆在核上的平面电子云,有一个界面。
Or, if you are at a party and you're ready to leave but you've left your bag with the host,
又或者,你在一个派对上,你准备要走了,但是你刚才把你的包放在派对主人那里了,
I wanted to show you that, so, first thing I'm going to do is say, all right, I know I'm going to need square root in here, so I'm going to, in fact, import math.
我们可以开始完成这个方法了,我想让你们看到完成这个方法的过程,第一件事情就是,我们在这儿需要一个求平方根的方法,实际上我将引入math包。
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