离解的英文：
(breaking) dissociation
breakdown
decompose

参考例句：

In specific acid catalysis, the undissociated acids do not contribute
在特殊的酸催化中，不离解的酸不起作用。

The dissociation - dependent strength of an acid or base.
强度指酸或碱的离解度

When alkali is added to such compounds a series of proton dissociations occurs
当碱加到这类化合物中，将发生一系列质子离解作用。

This increased optical density caused by a disassociation or melting of the DNA is called hyperchromicity
这种由于DNA离解或融解引起的光密度增加，称之为增色效应。

breaking是什么意思：
n. 破坏；断裂；音之分裂

to devastate; to break
使垮掉

Did you break your toy?
你弄坏你的玩具了吗？

break [lift, raise] a blockade
冲破 [解除] 封锁

dissociation是什么意思：
n. 分解,分离,游离

They dissociate themselves to escape trauma.
他们借助自我分裂来逃避创伤。

The dissociation - dependent strength of an acid or base.
强度指酸或碱的离解度

Halogens also have the necessary absorption in the ultraviolet and rapid dissociation.
卤素也具有吸收紫外线和分解快这两种特性。

breakdown是什么意思：
n. 故障；崩溃；破裂；分类；分解；衰竭，衰弱

The action have no breakdown.
此活动部件没有故障。

When does the breakdown happen easily?
什么时候容易发生故障？

Could you give me a breakdown of the costs?
你能给我一份费用的细目分类吗？