So this, where we start at zero is not a node, is the first thing to point out.

零点不是节点，这是第一个要指出来的，当我们。

麻省理工公开课 - 化学原理课程节选

But the important part here is that the work is not zero. You're starting at one point.

从任意一点出发,完成一个循环。

麻省理工公开课 - 热力学与动力学课程节选

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