甲烷氧化菌的数量明显高于背景值。

The quantity of MOB was much higher than the background value.

youdao

但是，厌氧氨氧化菌生长缓慢，厌氧氨氧化反应器启动困难。

However, the ANAMMOX reactor start-up is very slow and difficult.

youdao

但是，厌氧氨氧化菌生长缓慢，厌氧氨氧化反应器启动困难。

However, the ANAMMOX reactor start-up is very slow and difficult.

youdao