英语语法分析

It is a constitutional isomer of dimethyl ether.

这是二甲醚的结构异构体。

During the process, N- dimethyl methanamide is coproduct.

在这一过程中，N-二甲基甲酰胺是其副产物。

The main application of dimethyl sulphoxide was reviewed.

复习了二甲亚砜的主要应用。