We call the bonds between these atoms covalent bonds.

我们将这些原子之间的键称作共价键。

For example, take molecules, atoms held together by covalent bonds.

例如分子中原子有着共价的联系。

Normally, different molecules are connected by covalent chemical bonds between their atoms.

通常情况下，不同的分子通过原子间的共价化学键相连接。

SPNs do often contain conventional polymers that are held together by covalent bonds.

SPN通常含有由共价键连接在一起的普通聚合物。

Now, remember that in a covalent bond two electrons are shared, usually unequally, between atoms.

那么，通常，在共价键里，两个电子在原子之间被不平等共享。

That's because of the strength of their covalent bonds.

那是因为它们共价键的强度。

They're weaker than the forces that cause ionic or covalent bonds between atoms.

它们比引起原子间离子键或共价键的力弱。

This is crazy unstable. It's basically like having half of covalent bond dangling off the atom.

这是疯狂的不稳定。 这基本上就像有一半的共价键悬在原子上。

This is within the context of a covalent bond, how much electron affinity is there?

这是在共价键的范围内，有多少电子亲和力？

So this is also a covalent bond.

所以这也是一种共价键。