确定了萃取和反萃取的条件，考查了多种共存元素的分离情况，并在此基础上，制定了岩石矿物中超微量铱的简便、快速的测定方法。
The separation of several co-existent elements was investigated and easy and quick determination method of super trace Iridium was established based on it.
比较了电位滴定法和反滴定法测定烯烃含量的准确性。
The electrolytic titration method was compared with the inverse titration method in this paper for the accuracy of the measuring alkene.
本文采用过硼酸钠作底物的高锰酸钾反滴定法测定了红细胞溶血制品及心肌匀浆中的过氧化氢酶活力。
The activity of catalase in hemolysates of erythrocytes and myocardial homogenate in rats was measured by back titration method with permanganate, using perborate as the substrate.
通过浮选试验，EDS、动电位和红外光谱测定，考察了BK 501抑制剂在一水硬铝石与高岭石反浮选分离中的作用效果和机理。
The effect and mechanism of BK501 depressor in the separation of diaspore from kaolinite by reverse flotation was investigated by flotation test, EDS, electrokinetic potential and infrared spectrum.
利用该模式并结合钻柱力学三维分析，可以预测定向井井眼轨迹，还可以利用定向井井史资料，反求有关系数。
Combined with the BHA analysis, the models are used to realize the prediction of drilling trajectory and to back-calculate the related coefficients from the well history information.
结论：测定胃液中胆红素有助于判断胆汁反流，并肯定二甲基硅油可减少胆汁反流，由此而减轻胆汁反流性胃炎。
Conclusion: that the determination of bilirubin in gastric juice is helpful to judge bile reflux. The result confirms that dimethicone can lessen bile reflux, thereby mitigating bile reflux gastritis.
采用粒度分析、SEM、XRD、IR、DTA和TG、反气相色谱（IGC）和BET多层吸附等测试方法对干粉磨高岭土进行分析测定。
The determination of particle size, together with SEM, XRD, IR, DTA, TG, inverse gas chromatography (IGC)and BET multi-layer absorption techniques were used to characterise kaolin samples.
综述了反胶束的理化性质及测定方法、影响因素，及其在药剂学领域的应用进展。
The physicochemical characterization and influential factors of reverse micelles as well as their applications in pharmaceutics are reviewed.
并对测定过程中有机萃取剂，反萃酸度的选择及干扰离子的影响进行了探讨。
The selection of extraction solvent and acidity of stripping agent, and the effect of interferencing ion were studied.
乙炔抑制法能同时测定硝化和反硝化作用，在硝化和反硝化作用中有着重要的应用。
Acetylene inhibition method can measure nitrification rate and denitrification rate and it had been used widely.
乙炔抑制法能同时测定硝化和反硝化作用，在硝化和反硝化作用中有着重要的应用。
Acetylene inhibition method can measure nitrification rate and denitrification rate and it had been used widely.
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