outer shell

基本解释

Whereas for fluorine, fluorine is smaller than f minus is the one that's the outer shell shown here.
而对于氟来说，氟原子更小,与外部壳层在这的负一价氟离子相比。
In this artist's rendering, an outer shell of gas and dust - which erupted from the star hundreds of years ago - obscures the supernova within.
在这个大师的作品中，由气体和尘埃组成的外壳在几百年前喷发而出，使这颗超新星的内部一片混沌模糊。
The reactor building is an outer shell that is supposed to keep the weather out, but nothing in.
反应器建筑是整个核能源厂的外壳性建筑，以便保持厂内恒温，不受外界气候变化影响。

Whereas for fluorine, fluorine is smaller than f minus is the one that's the outer shell shown here.
而对于氟来说，氟原子更小,与外部壳层在这的负一价氟离子相比。
麻省理工公开课 - 化学原理课程节选
And, these outer shell electrons are termed valence electrons.
这些外层电子被,称作价电子。
麻省理工公开课 - 固态化学导论课程节选
So remember, that when we talked about Lewis structure, the organizing principle behind Lewis structures is the idea that within the molecule the atoms are going to arrange their valence electrons, such that each atom within the molecule has a complete octet or full outer shell.
记得，当我们讨论路易斯结构的时候，路易斯结构所遵循的组织原则是这样一种思路,那就是分子中的原子都倾向于,重新安排它们的价电子,使得分子有一个完整的,“八隅体“或者排满的外壳层。
麻省理工公开课 - 化学原理课程节选

The outer shell has plenty of ventilation to hopefully send that sweat skyward.
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