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

Keep in mind this is a professional degree and executive education model that is intended to be designed for people who are themselves working full time and still taking classes full time.

请记住这是一个职业学位,高级管理人员教育模式,就是为那些,全职工作的人员设计的,同时上全制日课程。

哈佛公开课 - 幸福课课程节选