1.
Simultaneous determination of the total nitrogen,ammonium-nitrogen,nitrite-nitrogen,and nitrate-nitrogen in wastewater by continuous fluxion analysis
连续流动分析法同时测定污水中总氮、氨氮、亚硝酸盐氮、硝酸盐氮
2.
Distribution of Organic Nitrogen and Total Nitrogen in the Surface Sediments of Pearl River Estuaries
珠江河口表层沉积物有机氮和总氮的分布
3.
Nitrogen measurement in infantile zhili syrup by Kjeldah method
凯氏定氮法测定小儿智力糖浆中总氮含量
4.
Relationship between Total Nitrogen,Total Alkaloid,Ratio of Total Nitrogen to Total Alkaloid and Sensory Quality in Flue-cured Tobacco Leaves of China
我国主产烟区烤烟总氮、总植物碱、氮碱比与感官质量的关系分析
5.
Design of Total Phosphorus and Total Nitrogen On-line Automatic Determination Software System in Water-Quality Control;
水质总磷总氮在线自动监测软件系统的设计
6.
On-Line Automatic Digestive Technology for Total Phosphorus and Total Nitrogen in Sea Water
海水中总磷、总氮在线自动消解技术的研究
7.
Dynamics of TN and TP in the Backwater Region of the Linjiang River in the Three Gorge Reservoir
三峡库区临江河回水区总氮和总磷的动态特征
8.
Research on Water Quality Assessment of the Reservoirs,Total Nitrogen and Total Phosphorus Forecast in Luan City
六安市水库水质评价与总氮·总磷预测研究
9.
A comparison of performances of three reagents for total Nitrogen and Phosphorus simultaneous digestion
三种总氮总磷联合消解液测定效果的比较
10.
Chemical reagent--General method for the determination of total nitrogen
GB/T609-1988化学试剂总氮量测定通用方法
11.
Two Alternative Methods for Measuring Total Nitrogen of Pond Soils
二种池塘底泥总氮含量的简易测定法
12.
TOTAL NITROGEN REMOVAL EFFICIENCY OF IMPROVED CONSTRUCTED RAPID INFILTRATION SYSTEM
改进型CRI系统总氮去除效果试验研究
13.
Jingxian 89 decreased TNC but improved RSN synchronously.
粳籼89可显著降低后代中总氮含量，同时提高糖氮比；
14.
Genetic Analysis for Soluble Sugar Content, Total Nitrogen Content and Ratio of Sugar to Nitrogen of Rice(Oryza Sativa.L.) Across Environments;
不同环境下稻米可溶性糖含量、总氮含量和糖氮比的遗传研究
15.
Distribution and Relationship of Nitrogen Content in Flue-cured Tobacco Leaf and Soil in Sanmenxia Tobacco Districts
三门峡烟区烤烟总氮与土壤氮素含量的分布特点及关系分析
16.
Determination of total nitrogen content for compound fertilizers--Titrimetric method after distillation
GB/T8572-1988复混肥料中总氮含量测定蒸馏后滴定法
17.
NON-POINT SOURCE TN LOAD RESEARCH IN WEIHE BASIN ABOVE LINTONG SECTION;
渭河临潼断面以上流域非点源总氮负荷研究
18.
The total absorption of nitrogen increased with the amount of nitrogen topdressing, but the proportion of absorption nitrogen during the blooming period to total nitrogen were downtrend.
棉花总吸氮量随著追氮量的增加而增加，但花铃期吸氮量占总吸氮量的比例呈下降趋势。