• So if we want to talk about the volume of that, we just talk about the surface area, which is 4 pi r squared, and we multiply that by the thickness d r.

    如果我们要讨论它的体积,我们要用的是表面面积,也就是4πr的平方,乘以厚度dr

    麻省理工公开课 - 化学原理课程节选

  • r And what that is the probability of finding an electron in some shell where we define the thickness as d r, some distance, r, from the nucleus.

    在某个位置为,厚度为dr的壳层内,找到原子,的概率,我们来考虑下我们这里所说的。

    麻省理工公开课 - 化学原理课程节选

  • a perfectly spherical shell dr at some distance, thickness, d r, dr we talk about it as 4 pi r squared d r, so we just multiply that by the probability density.

    在某个地方的完美球型壳层,厚度,我们把它叫做4πr平方,我们仅仅是把它,乘以概率密度。

    麻省理工公开课 - 化学原理课程节选

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