That cabin is a 14-ton spherical steel capsule only two meters in diameter, with a single,half-meter-wide circular plastic window for viewing.

VOA: standard.2010.06.21

There is a 1% chance it is beyond, but the 99% surface is spherical.

只有1%超出了，至少是99%可能位于的范围的轮廓。

麻省理工公开课 - 固态化学导论课程节选

It's no longer just a round spherical mass of cells, but it has some structure.

不再只是一个球状的细胞团,它有了一定的结构

耶鲁公开课 - 生物医学工程探索课程节选

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

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