查询词典 sulfate

Tempbond mixed with barium sulfate was applied by a periodontal probe to the tip of the interproximal dental papillae and mucogingival junction. Periapical films using parallel technique were taken. The presence of interproximal dental papilla was determined on radiographs.

实验部位为上颚前牙右侧犬齿到左侧犬齿，实验使用Tempbond混合硫酸钡剂，以牙周探针涂在齿间乳突尖和黏膜牙龈交界(mucogingival junction， MGJ)，作为利量点，并以平行法照射根尖片X光。

Chromic trioxide and chromium hemitrioxide are determined with iodometry, the coefficient of variation of chromic trioxide is 0.056%, and the recovery of marked compound is 99.82-99.83%; the coefficient of variation of chromium hemitrioxide is 1.45%,and the recovery of marked compound is 98.55-99.26%; iron is determined by complexometric titration, the coefficient of variation of iron is 1.73%, and the recovery of marked compound is 99.12-99.23%;sulfate is determined by complexometric titration, the coefficient of variation of sulphate is 0.16%, and the recovery of marked compound is

Analysis Of The Chromium Electroplating Wastewater By Oxidation-reduction And Complexometric Titration-化学工程与工艺-本文采用氧化还原滴定法与络合滴定法对镀六价铬的废水中铬酸酐，三氧化二铬，铁和硫酸根的含量进行了测定：铬酸酐和三氧化二铬用碘量法测定，铬酸酐的变异系数为0.056%，加标回收率为99.82-99.83%，三氧化二铬的变异系数为1.45%，加标回收率为98.55-99.26%；铁用络合滴定法测定，其变异系数为1.73%，加标回收率为99.12-99.23%；硫酸根用络合返滴定法测定，其变异系数为0.16%，加标回收率为

An analytical method for the determination of streptomycin sulfate by reverse phase ion-pair chromatography was introduced in this paper.

本文提出了采用离子对反相液相色谱分离技术测定硫酸链霉素含量的方法。

The dimethyl sulfate, a substance that is used to produce industrial dyes and pesticides, can be corrosive and irritative to human skin, eyes and the upper respiratory tract.

硫酸二甲酯是用来生产燃料和农药的物质。它对于人类的皮肤，眼睛和上呼吸道系统具有腐蚀和刺激作用。

The composition of oxygen isotope is a good tool to trace the origin and formation environment of sulfate.

氧同位素组成是一个非常有效的示踪硫酸盐的起源和形成环境的工具。

But Squyres says the sulfate salts and jarosite would have made for an extremely harsh environment.

他说："我要强调的一点是："尽管那样，我还是要说那是个令人不快的地方。

The performance of potassium ammonium jarosite for zinc and indium ions adsorption in the sulfate system is investigated.

考察黄钾铵铁矾对硫酸盐体系中锌、铟的吸附性能。

After detail analysis of current several iron removal methods, it was proved that the jarosite could not only be used for iron deep purification, but also release the accumulation of sulfate, which was due to the oxidation of pyrite.

在对现行诸多除铁方案进行分析后，指出了黄钠铁矾法不仅可以从锰结核浸出氯化物溶液中深度净化除铁，而且可以同时除去黄铁矿氧化生成的大部分硫酸根，这样无疑避免了硫酸根在氯化物体系中的积累。

NASA's principal investigator for the rover mission, Steve Squyres, and his colleagues report in the journal Science that the sedimentary rocks analyzed by Opportunity contain sulfate salts and a mineral called jarosite - harsh chemicals that are also found in briny water here on Earth.

此次漫游者任务的主要航天局调查员 Steve Squyres 和他的同伴在《科学日志》上发表道，"机遇号"分析的水成岩物质含有硫酸盐的成分以及一种叫做黄钾铁矾的矿物，这种化学物质具有很强刺激性，在地球的咸海水中也有这种物质。

This paper presents the experimental data of metastable phase equilibrium of Na+, K+, Mg2+∥Cl-, SO2-4-H2O quinary system at 35 ℃, from which the metastable phase diagram is drawn. It consists of nine regions of crystallization saturated with sodium chloride, potassium chloride, glasserite(3K2SO4*Na2SO4), leonite(K2SO4*MgSO4*4H2O), kainite(KCl*MgSO4*2.75H2O), thenardite(Na2SO4), astrankit(MgSO4*Na2SO4*4H2O), carnallite(KCl* MgCl2*6H2O), magnesium sulfate hexahydrite(MgSO4*6H2O) and bischofit(MgCl2*6H2O).

研究得出（Na+， K+， Mg2+∥Cl-， SO2-4-H2O）五元体系35 ℃时的介稳溶解度数据，绘制了该体系35 ℃的介稳相图，共有9个为氯化钠所饱和的结晶区域：氯化钾、钾芒硝（3K2SO4*Na2SO4）、钾镁矾（K2SO4*MgSO4*4H2O）、钾盐镁矾（KCl*MgSO4*2.75H2O）、光卤石（KCl*MgCl2*6H2O）、白钠镁矾（Na2SO4*MgSO4*4H2O）、硫酸钠、六水硫酸镁（MgSO4*6H2O）和水氯镁石（MgCl2*6H2O）。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。