And if we go ahead and square that, then what we get is a probability density, and specifically it's the probability of finding an electron in a certain small defined volume away from the nucleus.

我们得到的是，一个概率密度，它是，在核子周围，某个很小的,特定区域,找到电子的概率,所以它是概率密度。

麻省理工公开课 - 化学原理课程节选

Probability density of finding an electron within that molecule in some given volume.

在分子内某空间找到,一个电子的概率密度。

麻省理工公开课 - 化学原理课程节选

You make the volume infinitely large, the density of the gas infinitely small.

密度无限小，气体分子之间的相互作用。

麻省理工公开课 - 热力学与动力学课程节选

So, what we can do to actually get a probability instead of a probability density that we're talking about is to take the wave function squared, which we know is probability density, and multiply it by the volume of that very, very thin spherical shell that we're talking about at distance r.

我们能得到一个概率,而不是概率密度的方法,就是取波函数的平方，也就是概率密度，然后把它乘以一个在ｒ处的,非常非常小的,壳层体积。

麻省理工公开课 - 化学原理课程节选