英语语法分析

Caffeic acid is another phenolic compound found in grapes.

咖啡酸是葡萄中含有的另一种酚类化合物。

Objective To determine caffeic acid in Pugongying granules by HPLC.

目的用高效液相色谱法测定蒲公英颗粒中咖啡酸的含量。

OBJECTIVE To determine the content of caffeic acid and chlorogenic acid in Taraxacum from different habitats.

目的：测定不同产地蒲公英中咖啡酸和绿原酸含量。