root hair formation

• 根毛形成

root hair formation的用法和样例：

例句

1. First, bacteria of the genera Rhizobium or Bradyrhizobium infect root hairs of legumes and induce formation of root nodules where the bacteria proliferate.
   首先，根瘤菌属或慢生根瘤菌属的细菌侵染豆科作物根毛并在根毛内增殖形成根瘤。