ammonia nitrogen 氨氮;氨型氮,氨基氮
nitrogen content 含氮量;总氮量
total nitrogen 总氮,总氮量
nitrogen fertilizer 氮肥;氮肥肥料
liquid nitrogen 液氮
nitrogen oxide 化氮;氮的化物 nitrogen source 氮源;氮源物质
nitrogen fixation [化]固氮作 nitrate nitrogen 硝态氮;硝酸盐氮
urea nitrogen 尿氮;脲氮 nitrogen metabolism 氮代谢
nitrogen concentration 氮浓度
amino nitrogen [化]氨基氮
nitrogen dioxide [化]二化氮 nitrogen supply 氮供应
nitrogen balance [生化]氮平衡
biological nitrogen fixation 生物固氮;生物固氮酌;生物固氮作 nitrogen cycle 氮循环
nitrogen flow 氮化怜
nitrogen treatment 氮化处理