英语语法分析

Objective: To improve the synthesis technology of n-butyl gallate.

目的：改进没食子酸正丁酯的合成工艺。

Ethyl and propyl gallate were synthesized without water carrying agent.

乙酯和丙酯的合成还摒弃了带水剂。

Objective To determine the gallate level in Reling Qing Syrup with HPLC.

目的用高效液相色谱法测定热淋清糖浆中没食子酸的含量。