英语语法分析

The primary invasion site of Rhizobium is the root hair of the plant.

根瘤菌的主要侵入点是植物的根须。

Nodulation factors are induced when nodulation genes of Rhizobium are expressed.

根瘤菌结瘤基因表达后诱导产生结瘤因子。

The infection process of legumes by rhizobium and Bradyrhizobium species consist of several stages.

豆类被根瘤菌和博斯特属菌感染的过程分为几步。