biological removal of nitrogen  生物脱氮

biological removal of nitrogen and phosphorous  生物除磷脱氮

biological removal of nitrogen and phosphorus  生物脱氮除磷

catalytic removal of nitrogen oxide  氮氧化物催化消除

Combined Removal of Nitrogen  复合脱氮

demanding volume of nitrogen and phosphorus  氮磷需求量

load of nitrogen and phosphorus  氮磷负荷

nitrogen removal of water pollution  水体脱氮

removal of nitrogen  脱氮; 氮气脱除

removal of nitrogen and phosphorous  脱氮除磷; 除磷脱氮

removal of nitrogen and phosphorus  脱氮除磷; N、P去除

Removal of Nitrogen in Molten Steel  钢液脱氮

removal of nitrogen oxide  氮氧化物脱除

Simultaneous Removal of Nitrogen and Phosphate  同步脱氮除磷

Simultaneous Removal of Nitrogen and Phosphorus  同步脱氮除磷

simultaneous removal of nitrogen and sulfur  同步脱氮除硫

the pollution load of nitrogen  TN负荷

unconventional pathways of nitrogen removal  非传统脱氮途径

volume loading of removal nitrogen  氮容积去除负荷