earthworm biofiher

• 蚯蚓生物滤池

earthworm biofiher的用法和样例：

例句

1. Sludge reduction performance by earthworm biofilters using quartz sand and ceramsite as media was compared.
   比较了石英砂和陶粒滤料蚯蚓生物滤池的污泥减量化效果。