It was a classical model, right, so we could say the electron is exactly this far away from the nucleus.

这是个经典模型，对吧，我们说电子离,原子核就是这么远。

麻省理工公开课 - 化学原理课程节选

So, what he did was kind of impose a quantum mechanical model, not a full one, just the idea that those energy levels were quantized on to the classical picture of an atom that has a discreet orbit.

还不是完整的,只是这些能级，是量子化的概念，作用到原子有分立轨道的经典原子模型上,当他做了一些计算后,他得到有个半径,他算出来。

麻省理工公开课 - 化学原理课程节选

That's a deterministic way of doing things, that's what you get from classical mechanics.

与核子的半径,是从经典力学中得到的，但我们从量子力学模型，知道的事实是。

麻省理工公开课 - 化学原理课程节选