知识贝壳
知识贝壳
所属栏目：英汉双解生物学
Agroup of bacteria characterized by a mycelialfungus-like growth habit and belonging to thephylum Actinobacteria. They are numerousin the topsoil and are important in soil fertili-ty. Some may cause infections in animals andhumans. Most of the antibiotics ......（本文共 398 字 ） [阅读本文]>>