nodule bacterium

• 根瘤菌

nodule bacterium的用法和样例：

例句

1. Nodule bacteria are very good at biological nitrogen fixation.
   根瘤菌是生物固氮的能手。
2. Within the nodule, rhizobia proliferate in very dense clusters of cells with altered morphology.These cell forms are called bacteroids.
   在根瘤中，根瘤菌在形态改变的细胞中大量增殖紧密排列，这些，细胞组织被称作类菌体。