ammonia and nitrogen

• 氨氮

ammonia and nitrogen的用法和样例：

例句

1. The key pollution indicators are ammonia nitrogen and BOD.
   主要污染指标是氨氮和生化需氧量。
2. Ammoniac nitrogen pollution is to bring about Jiang He laky water system one of main factors of eutrophication.
   氨氮污染是导致江河湖泊水体富营养化的主要因素之一。