大学英语词汇短语释义解析及例句 covalent bond


释义：

covalent bond n. [物化] 共价键

例句：



A coordinate covalent bond is one where both bonding electrons are from one of the atoms involved in the bond.

配位共价键是其中两个键合电子均来自该键所涉及的原子之一的键。



Covalent catalysis involves the substrate forming a transient covalent bond with residues in the active site or with a cofactor.

共价催化涉及底物与活性位点中的残基或与辅因子形成瞬时共价键。



What's the definition of the covalent bond?

共价键的定义是什么？


He said that the percent ionic character, and this is within a bond, not for a compound, for a covalent bond.

他提到离子百分数，是指一根键中，并非一个分子中。


A covalent bond is any time we have a pair of electrons that is shared between two different atoms.

所谓共价键就是我们有两个原子,共用一对电子。


Likewise, the element that is a good electron acceptor in an electron transfer reaction is going to be the element that is going to hog the electrons in a covalent bond.

同样的，这个元素在一个电子转移反应中,是个很好的受赠者它将成为在共价电子,中吸引电子的元素。



Avocados have become popular in restaurants and homes because, in food-science terms, they act as a "covalent bond" with other ingredients.



Locklin and his colleagues sprayed the substance onto materials and exposed them to ultraviolet light, which causes a covalent bond with the host material.