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去氮法，脫氮（作用）...

The basic principles, current situation and trend of urban sewage biological denitrogenation are introduced.本文介紹了城市污水生物脫氮的基本原理, 研究現(xiàn)狀和進(jìn)展....

denitrogenation的音標(biāo)：denitrogenation的英式發(fā)音音標(biāo)為：[den?tr?d??'ne??n]denitrogenation的美式發(fā)音音標(biāo)為：[den?tr?d??'ne??n]...