ammonian- nitrogen是什么意思 ammonian- nitrogen怎么读
ammonian- nitrogen的用法和样例
- The key pollution indicators are ammonia nitrogen and BOD.
主要污染指标是氨氮和生化需氧量。 - 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。
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