KBNA：总氮

“TN”经常缩写成KBNA，以便快捷书写、使用。

常见于地域领域 ,和机场代码相关。

中文意思为：“总氮”。

TN具体释义

The amino acid composition of Tn I was also analysed.
对其氨基酸组成亦进行了分析。
The effect of the COD / TN(KBNA) changes of domestic sewage on denitrification and dephosphorization is studied emphatically.
作者重点研究了生活污水COD/TN比值变化对其除磷脱氮性能的影响。
Paddy soil had significantly higher contents of TN(KBNA) and AN than yellow soil and purple soil.
水稻土全氮和碱解氮含量均极显著高于黄壤和紫色土；
The impact of environmental factors on cod, tn, tp release from sediment
环境因子对底泥释放COD、TN和TP的影响研究
The results showed that the removal rate of TN(KBNA) and TP increase with the increase of wastewater concentration.
结果表明，TN、TP的去除率随污水浓度升高而升高，水培液中TN、TP浓度随污水浓度升高而降低。