英语语法分析

Gallotannin is an important part of vegetable tannin.

没食子单宁是植物单宁的重要分支。

Isolation and identification of low molecular weight constituents of gallotannin and methanolysis products are reported.

本文报道了棓子单宁中低分子量组份和醇解产品的分离鉴定。