All right, so now we can move on to the start of today's notes, which is atomic radius.

好，现在我们可以开始讨论今天的讲义了，从原子半径开始。

麻省理工公开课 - 化学原理课程节选

And first, on your lecture notes, I start with atomic radius.

首先，在大家的讲义上，我是从原子半径开始的。

麻省理工公开课 - 化学原理课程节选

The reason in our radial probability distributions we start -- the reason, if you look at the zero point on the radius that we start at zero is because we're multiplying the probability density by some volume, and when we're not anywhere 0 from the nucleus, that volume is defined as zero.

在径向概率密度里，我们开始,如果你们看半径的零点，我们从零点开始,因为我们用概率密,度乘以体积,而当我们，在离核子很近的地方,体积是，所以我们会在这里。

麻省理工公开课 - 化学原理课程节选