还原的

Self-made tungsten trioxide (WO_3) by calcining ammonium paratungstate was selected as the raw material to produce ultrafme and homogenous tungsten powder by oxidation-reduction method.

通过研究，得到如下结论：(1)本研究选取的三氧化钨原料，通过氧化—还原法(4次氧化5次还原)是可以制备出超细钨粉的；所得金属钨粉的平均粒度约为0.38μm。

The photoreductive reactions prove that the natural sphalerite sample exhibits a high photoactivity on reducing methyl orange under visible light irradiation, which is consistent with its specific characterization.

与其特殊的物理化学性质相符，天然闪锌矿光催化还原降解甲基橙的实验证明了其较高的可见光催化还原活性。

The banjo-type axle housing 10 comprises an enlarged central, or banjo, portion 12 defining a hollow interior adapted for housing a differential assembly therein, and a pair of sleeve-like axle beam portions 14R and 14L outwardly laterally extending from opposite sides of the center portion 12 for housing axle shafts. The central portion 12 has a front carrier opening 16 formed therethrough on its forwardly facing side, and a rear opening 18 formed therethrough on its rearwardly facing side.

桥壳banjo-type组成的中央，放大10分12个定义斑鸠，或是一个空洞的室内适合住房差动总成，和一双sleeve-like轴部分梁横向延伸14L 14R外，从两端的中心部分12住房刚性车轴。12有一个中央部分开放前载体上16形成籍由氧化还原，使得面对18形成一个开放其rearwardly面对籍由氧化还原。

It is found from calculated results that different volatile compositions,stoichiometric ratio and temperature in the reburn...

通过计算发现，不同的挥发分组分、再燃区空气过量系数及再燃区温度对 NOx 的还原过程和还原率都有重要的影响

Tache of kinetics for the procedure of reduction reaction of samarium oxide with metallic lanthanum has been discussed in this paper.

讨论了镧热还原氧化钐过程的动力学环节，分析了还原过程镧—钐合金存在的可能性，采用反证法确定了制备金属钐温度下的动力学控速环节。

The native oxides on CdSe surface could be reduced to elemental Selenium by a HF etching process. Bombardment using 100eV Ar〓 ions with a dosage of about 1×10〓 ions/cm〓 could remove all the elemental Selenium, which results in a normal stoichiometrical surface CdSe.

实验观测到HF刻蚀可以将CdSe半导体表面的Se氧化物还原为元素Se.100eV的Ar〓离子轰击可以除去HF刻蚀后在表面还原生成的元素Se，从而清洁样品表面，保证了表面CdSe的化学计量比。

The powder baked at 680C is perfect in properties, and zinc oxide will decompose when the reduction temperature exceeds 700 C,Results of XRD, SEM and TEM for the targets indicate that secondary phase ZnAl2O4 exists in the targets synthesized with reduced or unreduced compound powders, but not in the target synthesized with nanometer powders.

各靶材样品的XRD、SEM和TEM分析结果表明：以还原和未还原ZAO粉为原料的靶材组织中出现了第二相组织：ZnAl_2O_4，而以纳米ZnO、Al_2O_3粉为原料的靶材组织中未见第二相。

According to different temperature, potential of reducing gas and content of SiO〓 in concentrate iron will be separated out in whiskery, thick and porous structure.

本文通过光栅电子显微镜对水平管状炉和石英管流化床还原试样的显微结构分析，研究了多种铁精矿在还原过程中铁的析出形态及其与粘结行为的关系。

Progress in researches on catalysts for fluidized bed oxychlorination of ethylene to make dichloroethane;2. The catalytic performance of CuCl2-KCl/MgO-Al2O3 catalysts was evaluated for the oxychlorination of ethane to produce vinyl chlorid.

采用浸渍法制备了不同含量MgO改性的γ-Al2O3，采用X射线衍射、N2物理吸附、NH3的程序升温脱附和程序升温还原等手段表征了催化剂的结构、表面酸性和氧化还原性质，并对CuCl2-KCl/MgO-Al2O3催化剂催化乙烷氧氯化制氯乙烯反应进行了活性评价。

Based on the research and development of synthesis of halogenated pyridines the paper chose the electrochemical reduction as a research direction, and to 3,4,5,6–tetrachloropicolinic acid, pentachloropyridine, 3,4,5,6-tetrachloro-2-trichloromethylpyridine for raw materials, the reduction behavior on silver and carbon -containing silver electrode was mainly studied.

全卤吡啶脱氯是卤代吡啶类化合物合成的新尝试，本文在国内外卤代吡啶合成研究的基础上，选择了以电化学还原作为研究方向，以3，4，5，6-四氯吡啶甲酸、五氯吡啶、3，4，5，6-四氯-2-三氯甲基吡啶为原料，主要研究了其在银和碳载银电极上的还原行为。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐