结果表明当电子半径大于一个临界长度时，方程的解表现出良好的性质，不会出现奔离和预加速的现象。

It is shown that when the radius of the electron is greater than a critical length, the behavior of the solution is fine, no run-away and pre-acceleration appears.

youdao

实质-联系 （电子半径） 数据模型以有一个基本物件的集合物件，叫做了实质的真正世界的一个知觉为基础， 和在这些物件之中的联系。

The entity-relationship(E-R) data model is based on a perception of a real world that consists of a collection of basic objects, called entities, and of relationships among these objects.

youdao

它们是轨道的半径，系统的能量以及电子的速度，我接下来给你们展示解法。

They are the radius of the orbit, the energy of the system and the velocity of the electron, and I am just going to present you the solutions.

youdao

The radius of the orbit, the energy of the system and the velocity of the electron, I am just going to present you the solutions.

是轨道的半径，系统的能量,以及电子的速度，我接下来会给你们讲解其方程的解法。

麻省理工公开课 - 固态化学导论课程节选

In other words, just want to know where the electron is somewhere within the shell radius of the ground state of atomic hydrogen anywhere.

换言之，我只是想知道,电子在哪,可以在氢原子基态下的半径,里面的任何地方。

麻省理工公开课 - 固态化学导论课程节选

We'll then take a turn to talking about the periodic table, we'll look at a bunch of periodic trends, including ionization energy, electron affinity, electronegativity and atomic radius.

然后我们再开始讲元素周期表，我们会看到很多周期性规律，比如电离能，电子亲和能，电负性以及原子半径。

麻省理工公开课 - 化学原理课程节选