combined application of organic nitrogen and nitrogen  有机无机肥配施

nitrogen balance nitrogen equilibium  氮平衡

nitrogen effect to soil nitrogen  氮效应

nitrogen response rate to fertilizer-nitrogen  氮响应

Real-time nitrogen management and site-specific nitrogen management  实时实地氮肥管理

Acute toxicity and chronic toxicity  急慢性毒性

(N) nitrogen  氮

(nitrogen) oxide  一氧化氮; 加速度动力放大系数(ADMF)

~(15)N labelled nitrogen fertilizer  ~(15)N标记氮肥

15N labelled nitrogen fertilizer  15N标记氮肥

3-Nitrogen  三氮

6Cr21Mn10MoVNbN high nitrogen steel  6Cr21Mn10MoVNbN高氮钢

Aamonia-nitrogen  氨氮

abdominal·Endovascular graft exclusion·Blood urea nitrogen·Creatinine·  腹·腔内隔绝术·血尿素氮·肌酸酐; 过氧化氢酶(CAT); 四川省地质矿产勘查开发局成都综合岩矿测试中心

absorbed nitrogen  吸收氮

absorbed nitrogen and phosphorus  吸附态氮磷

absorbing nitrogen amount  氮素吸收量

absorption and distribution of nitrogen  氮的吸收及分配

absorption and utilization of nitrogen  氮素吸收利用