1.
PROPERTIES AND CHARACTERISTICS OF SQUARIC A CID AND STRNCTURE DETERMINATION OF NITROGEN SQUARIC ACID, NITROGEN OXOSQUARIC OXOSQUARIC A CID AND NITROGEN SURFOSQUARIC A CID
方酸的性质特征和氮方酸、氮氧方酸及氮硫方酸的结构分析
2.
Improvement on determination method of total nitrogen in seawater by alkaline potassium persulfate
碱性过硫酸钾氧化法测定海水总氮方法的改进
3.
Study on the Interference of Nitrite in the Determination of Sulfides and the Method of Avoidance
亚硝酸盐氮对硫化物测定的干扰及消除方法研究
4.
Study on Integrative Process of Sulfate Reduction and Autotrophic Denitrification Aimed at Simultaneous Removal of Carbon, Nitrogen and Sulfur
硫酸盐还原与反硝化脱硫工艺耦合及碳氮硫去除效能研究
5.
Effect of Thermal Treatment under Nitrogen on the Ammonium Thiosulfate-Presulfidized Mo/Al_2O_3 Catalyst
氮气热处理对硫代硫酸铵预硫化的Mo/Al_2O_3催化剂的影响
6.
Basic potassium persulfate-ortho-hydroxybenzoic acid method determination of total nitrogen in dewatering sludge
碱性过硫酸钾—水杨酸法测定脱水污泥总氮
7.
Ammonium sulfate and potassium sulfate were used as sources of N and K because these sources are more efficient in these soil conditions.
用硫酸铵和硫酸钾作氮和钾肥源因其对该土壤条件更有效。
8.
Sulphate of ammonia contains 20.6 per cent N and is a widely used fertilizer.
硫酸铰含氮20。6％，是一种广为使用的肥料。
9.
2 Calculate the percentage by mass of nitrogen in urea and ammonium sulphate.
试计算氮在尿素及硫酸氨的质量百分率.
10.
Synthesis and the Property Study of the Polycarboxylic Acids with Sulphur- and Nitrogen-containing Groups.;
含硫、含氮的多羧酸化合物的合成及性能研究
11.
An Investigation into Two-stage Anaerobic Process Treating Wastewater under High Sulfate and Ammonia;
两段厌氧工艺处理含硫酸盐和氨氮废水的研究
12.
Study of The Minimization on The Determination of Nitrogen in (NH_4)SO_4 Fertilizer by Formaldehyde Method;
甲醛法测定硫酸铵中氮含量的微型化研究
13.
Interference and avoidance of nitrite in the determination of sulfides
亚硝酸盐氮对硫化物测定的干扰及消除
14.
Fast Determination of Vanadium in Vanadium-nitrogen-iron Alloy by Ammonium Ferrous Sulfate Titrimetric Method
硫酸亚铁铵滴定法快速测定钒氮铁合金中的钒
15.
Study on Syntheses and Structures of Organotin Heteroatom Carboxylates and Heterocycle Mercaptan with N Atoms
含氮杂原子的羧酸及氮杂环硫醇有机锡化合物的合成及结构研究
16.
Practice for use of a ceric-cerous sulfate dosimetry system???
硫酸高铈和硫酸铈剂量测量系统的使用方法
17.
Stainless steels--Ferric sulfate-sulfuric acid corrosion test
GB/T4334.2-1984不锈钢硫酸-硫酸铁腐蚀试验方法
18.
Stainless steels-Method of copper sulphate-Sulphuric acid corrosion test
GB/T4334.5-1990不锈钢硫酸-硫酸铜腐蚀试验方法