英语语法分析

Catalyst and method for preparing 1, 5 pentanediol by hydrogenation of 1, 5 dimethyl glutarate.

一种用于1,5 -戊二酸二甲酯加氢制取1,5 -戊二醇的催化剂及方法。

The density, viscosity, refractive index and flash point of glutarate were measured at the same temperature.

通过实验测量同温度下饱和戊二酸酯的密度、粘度、折光率、闪点。