英语语法分析

The ways how to improve the purity and yield of mesitylene were discussed.

探讨了提高均三甲苯产品纯度和收率的途径。

The quality of the product has been increased by the renovation design of the mesitylene plant.

通过均三甲苯装置进行改造设计，提高了产品的质量。

A new technology for synthesis of mesitylene from pseudocumene by liquid non-hydroisomerization on M-2 catalyst was studied.

在M - 2型复合丝光沸石催化剂上，研究了偏三甲苯液相非临氢异构化合成均三甲苯的工艺。