英语语法分析

Under this conditions, the yield of propyl benzoate reached 70.5%.

上述条件下，苯甲酸丙酯的产率可达70.5%。

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。

Under optimum synthetic condition, the yield of propyl ester was 93.5%.

在最佳反应条件下，尼泊金丙酯的产率为93.5%。