搞不清楚这个by是修饰哪个的

integration of the expression obtained over all e finally produces the expression R(r) sought for the wear of the working layer by the totality of all possible reference points within the areally extended semiconductor wafer.

subject: integration of the expression obtained over all e
verb:finally produces
object: the expression R(r) sought for the wear of the working layer
(produces) by the totality of all possible reference points within the areally extended semiconductor wafer.

那么subsject 的部分 integration of the expression obtained over all e
该怎么翻啊

表达式在全部e区间的积分

差不多是这个意思

学习一下of ...by的短语结构：
例如
rape of a japanese girl by an American soldier.
integration of the production processes by computer system。
楼主查一下词典关于of的词条。

of 的词义：属于;    以...制的;    所有的;    ...之中;    ...的;    ...数量的;    关于;    的;    prep. ...的;    prep.]...的;     由...制成的;     离;     关于;     对
属于;    以...制的;    所有的;：be of , make of……
...之中;    ...的;    ...数量的;    关于;    的; :名词of名词