农村家庭生活垃圾和人粪尿中的氮均为高于城镇家庭。
硝酸盐氮是水体中的主要污染物之一。
近年来，硅中氮的行为被广泛深入地研究。
In recent years, nitrogen behavior in single crystal silicon has been intensively studied.
同时对基础油中硫、氮对油品清净性的影响进行了讨论。
The influence of sulfur and nitrogen in the base stocks was also studied.
中氮企业设备庞大、结构复杂、管理难度大，不同维修体制影响设备运行的状况与成本。
The equipment maintenance system influences the condition and cost of the equipment movement.
存在于rna而非dna中的一种含氮碱基。
Uracil a nitrogenous base that is found in RNA but not in DNA.
浓缩倍数的控制以及有机物浓度、氨氮浓度都是污水回用中的关键因素。
The control to condense multiple, organism and NH4-N are the key factors.
浓缩倍数的控制以及有机物浓度、氨氮浓度都是污水回用中的关键因素。
The control to condense multiple, organism and NH4-N are the key factors.
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