The most efficient way to generate chiral sulfoxides is asymmetric oxidation of prochiral sulfides Catalyzed by chiral metal complexes.
手性金属络合物催化硫醚的不对称氧化是合成手性亚砜最有效的方法。
The impacts of chelator on metal speciation concentrations correlativity and fly ashes oxidation ability are different.
络合剂的存在对飞灰氧化能力影响与金属形态浓度相关性的影响是不同的。
It prevents the oxidation of the metal surfaces during the heating operation by excluding oxygen.
将氧排斥在外以防止在加热期间金属表面被氧化。
Chemical oxidation: through the chemical processing the metal surface oxidation film formation process.
化学氧化：通过化学处理使金属表面形成氧化膜的过程。
Weak erosion before plating, in a certain: remove metal parts in the solution of surface extremely thin oxidation film, and make the process of surface activation.
弱浸蚀：电镀前，在一定组成溶液中除去金属制件表面极薄的氧化膜，并使表面活化的过程。
If fluxed parts are allowed to stand, the water in the flux will evaporate, and dried flux is liable to flake off, exposing metal surfaces to oxidation.
如果允许涂上焊剂的部件处于直立状态，那么焊剂中的水分会蒸发掉，而干燥的焊剂很容易脱落，致使暴露的金属表面容易被氧化。
This initial reaction or oxidation resists further chemical reaction on the metal surface.
初始的反应或氧化可以抵制材料表面再进行化学反应。
The oxidation mechanism of greases was introduced. And the mechanisms of action and application of antioxidant, metal deactivator and corrosion inhibitor in grease were discussed.
介绍了润滑脂的氧化机理，探讨了抗氧剂、金属减活剂和腐蚀抑制剂在润滑脂中的作用机理及应用技术。
Then the technical parameters including sealing temperature, time and the oxidation thickness of metal alloy affected on sealing quality were discussed.
同时探讨了封接温度、封接时间、金属合金预处理的程度以及保护气氛等工艺参数对封接质量的影响。
Jarosite is a major secondary mineral formed in acid supergene environment by oxidation of metal sulphide.
黄钾铁矾是金属硫化物在酸性条件下氧化形成的主要次生矿物。
The application of metal complex as the catalysts of aerobic oxidation of alcohols and epoxidation of alkenes are reviewed.
综述了各种金属络合物催化剂在分子氧作为氧化剂在醇的氧化、烯烃的环氧化上的应用。
The heterogeneous catalytic action of transition metal oxides of Fourth period in the liquid phase oxidation of cumene has been investigated.
在液相中研究了第四周期过渡金属氧化物在异丙苯氧化中的多相催化作用。
The results shows: (1) The major problem of choosing container materials is oxidation and erosion of liquid metal in high temperature.
研究结果表明：(1)高温氧化起皮剥落以及金属液体浸蚀是选择容器材料遇到的主要问题。
The additional weight due to metal oxidation in the test process is considered in test data processing.
数据处理中，考虑了热态试验过程中，金属被氧化而增加的重量。
Direct testing for a passive surface can be accomplished by X-ray Photoelectron Spectroscopy (XPS) testing which is used to measure the oxidation states of elements found on the metal surface.
钝化表面的直接检测可通过X射线光电子光谱法(XPS)检测来实现，该方法通常用于金属表面发现的元素的氧化状态。
Dihydromyricetin has excellent antioxidant activity. Its antioxidant activity embodies by chelating metal ion and clear the catalysis to free radical oxidation.
二氢杨梅素抗氧化活性优异，其作用机制是通过螯合金属离子，从而消除其对自由基氧化的催化作用。
When the affinity of organic vapors for water or the oxidation ability of metal ions used is strong enough, he adsorbed organic vapors on ACF do not affect the REDOX capacity of ACF for metal ions.
当吸附在ACF中的有机蒸汽与水的亲合力强时或参考氧化还原反应的金属离子氧化能力较强时，预先吸附有机蒸汽对ACF氧化还原容量没有明显影响。
Slow reaction of matter and oxygen is slow, but the oxidation is slow oxidation, such as metal corrosion, biological respiration, etc... the burning of the intense burning of light.
物质与氧缓慢反应缓缓发热而不发光的氧化叫缓慢氧化，如金属锈蚀、生物呼吸等。剧烈的发光发热的氧化叫燃烧。
The effects of oxygen absorption and oxidation on the resistor films of metal, alloy and cermet, and their operation mechanism are quite different.
氧吸收或氧化对金属电阻膜、合金电阻膜及金属陶瓷膜的影响及作用机理差别很大。
The catalytic oxidation ability of 13 metal ion-exchanged montmorillonites are investigated in oxidative removal of the sulfides which are the main pollutant in the moult and alkali swell waste water.
在氧化法去除含硫脱毛碱膨胀废水内主要污染物硫化物的过程中，考察了13种金属离子交换蒙脱石的催化氧化能力。
Effect of oxidation of interim metal on aluminum shape mold during liquid nitrogenous had been investigated.
研究了过渡金属元素氧化物对铝型材模具在盐浴氮化中的影响。
Heat released by the oxidation keeps the metal molten.
氧化过程中释放出来热量还能保持金属熔化。
The methods of modification included the surface covering of graphite with a layer of disorganized carbon or a film of appropriate metal, surface oxidation, mechanical grinding and doping.
修饰与改性方法包括形成包敷层和金属层、表面氧化、机械研磨以及掺杂等方法。
The present paper Outlines that the surface area of sintered porous metal for valve can be measured by anodic oxidation.
本文提出了用阳极氧化法测定阀金属烧结多孔体的表面积。
Carbonated salt can consume acid produced in the process of oxidation of sulfide and stop transfer of metal.
碳酸盐可以消耗硫化物氧化所产生的酸并可防止金属的迁移。
The main factors influencing the oxidation of fatty acid in beer included temperature, light, oxygen, metal ions and antioxidant.
影响啤酒中脂肪酸氧化的主要因素有温度、光、氧气、金属离子及抗氧化剂。
How does the mechanism of oxidation and reduction reaction proceed between nitric with metal and nonmetal?
硝酸跟金属、非金属发生氧化还原反应的历程是怎样进行的？
How does the mechanism of oxidation and reduction reaction proceed between nitric with metal and nonmetal?
硝酸跟金属、非金属发生氧化还原反应的历程是怎样进行的？
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