covalent bonds

基本解释

And the key word for covalent bonds is the idea of being shared.
而关于共价键最关键的一点就在于共用的概念。
So, that's basically the idea of how we are going to be thinking about covalent bonds.
那么，这就是我们所应该想到的基本思路,在考虑共价键时。
At this level, basic concepts such as bonding, ionic and covalent bonds are briefly introduced to students.
在这一级，基本概念，如氢键，离子和共价键简要介绍给学生。

There's not actually chemical covalent bonds that are formed but it's a non-covalent interaction, usually dominated by hydrogen bonding.
所以配体和受体之间不生成共价键,这是一种非共价化合反应,它们通常以氢键相联
耶鲁公开课 - 生物医学工程探索课程节选
And when we talk about covalent bonds, there's 2 properties that we'll mostly focus on, and that's going to be thinking about the bond strength or the energy by which it stabilized when it bonds.
而当我们讨论共价键的时候，有两点特性是我们最关注的，那就是键的强度,或者说成键之后能量降低了多少。
麻省理工公开课 - 化学原理课程节选
So as we said when we first introduced covalent bonds, it's a sharing of electrons, but it's not always an equal sharing.
当我们刚开始介绍共价键的时候，我们说过电子是被共用的，但是共用却不一定是均等的。
麻省理工公开课 - 化学原理课程节选

They performed this trick, as they explain in the journal Langmuir, using a substance called phenyl azido, which readily forms covalent bonds with its neighbours when exposed to ultraviolet light.
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a type of chemical bond involving the sharing of electrons between atoms in a molecule, esp the sharing of a pair of electrons by two adjacent atoms