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1)  total body nitrogen
总体氮量
2)  total nitrogen content
总氮含量
1.
Analysis of combining ability and heritability of nicotine content,total nitrogen content and nitrogen/nicotine ratio in burley tobacco;
白肋烟烟碱、总氮含量及氮碱比的配合力与遗传力分析
2.
Through analysis on chemistry properties of various nitrogen forms in compound fertilizers,some problems existing in determination of total nitrogen content in compound fertilizer are solved,and the qualitative analysis of nitrogen form and its key points is also presented for a reference in determination of compound fertilizer.
通过对复混肥料中不同形态氮的化学性质的分析,解答了复混肥料总氮含量检验中的常见问题。
3)  Total nitrogen
总氮含量
1.
Known and unknown total nitrogen in water were measured by ionic chromatograph and GBl 1894-89 ultraviolet spectrophotometer.
采用紫外分光光度法和离子色谱法分别测定已知和未知总氮含量的水样。
4)  total nitrogen
氮的总量
5)  total nitrogen
总氮量
1.
The effects of different types of sugar,sugar with different concentrations,(NH~+_4/NO~-_3,)and total nitrogen in culture medium on the micropropagation of sweet potatoes were studied with nodal cuttings of virus-free plantlet.
以脱毒甘薯的茎段为材料,研究培养基中不同糖种类、糖浓度、NH4+/NO3-及总氮量对甘薯组培苗扩繁的影响。
6)  total fixed nitrogen
固定氮总量
补充资料:氮质生化需氧量
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性质: 在BOD检验中,氨氧化为亚硝酸盐或硝酸盐时取用的生化需氧量,即第二阶段生化需氧量。通常水样培养10天后才产生此氧化作用,因此,5天生化需氧量不包括氮质生化需氧量。生物硝化过程包括两个阶段,第一阶段氨转化为亚硝酸盐,第二阶段亚硝酸盐转化为硝酸盐。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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