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It was found that PLZT was easily reduced and the thickness of reduced layer had a linear relationship with the reduction time; The optimal conditions for PLZT were determined to be 950℃ for 1~5 hours; Reduced PLZT was composed of reduced and unreduced layer obviously and the reduced layer was transgranularly fractured while the unreduced ceramic was intergranularly fractured; Metallic lead and refractor oxides (PbO, ZrO2, TiO2, etc.) were found in the reduced layer, however, the crystal structure of PLZT was not found.

研究表明，PLZT具有较好的还原性能，还原层厚度与时间有线性关係，理想的还原条件为：950℃保温1~1.5h；还原样品有明显的分层结构，还原层表现出穿晶断裂而未还原层则是沿晶断裂的特徵；还原层主要由金属Pb及PbO， ZrO2， TiO2等氧化物组成，原先的晶体结构已不存在。

ECON-07 is endeavor in reverting and recycling the oxides occurs during welting of Wave Soldering Machine in order to reduce production cost, creat green environment and assist the quality promotion.

ECON-07经济型锡渣分离机主要用于将波峰焊机在焊接过程中产生的氧化物进行还原、直接回收利用，以达到降低生产成本、保护环境和辅助提高产品质量的目的。

These nanoparticles then oxidise back into silicon oxides, drawing oxygen fromthe surrounding air.

这一单分子随即氧化形成氧化硅。从周围的空气中夺走氧。

Consequently, emission control of acidifying compounds such as sulphur dioxide and nitrogen oxides becomes imperative under the severe situation of China.

针对酸沉降污染的严峻形势，加强对二氧化硫和氮氧化物等酸性物质的排放控制已是势在必行。

Some ores of copper are oxides and carbonates, and they

原。青铜：铜和锡的合金，可能是在铜和锡混合的地方

MgO-C brick has a good erosion resistance but Al〓O〓-C brick is better. Corrosion mechanism for refractory without carbon is that FeO and oxides of molten slag take place chemical reaction with constituents of refractory and forming low fusing point compounds to be dissolved in molten slag. For those refractory containing graphite carbon is to be decarburized in advance and to form decarburizing layer and metamorphosis layer. The subsequent corrosion is decarburizing and taking chemical reaction to form low fusing point compounds and dissolved in molten slag at the same time.

铁浴中硅和钛的扩散是影响铁浴及熔渣与耐火材料作用的重要因素，耐火材料中添加的TiO〓和SiC受熔渣氧化和侵蚀，将被部分还原形成Si，Ti向铁浴中扩散，Si、Ti在铁浴中的扩散研究结果是： D〓=1.84×10〓exp（－5988.7/T） cm〓/S E〓=49766 J/mol D〓=7.76×10〓exp（－53225.5/T） cm〓/S E〓=442304 J/mol 铁浴式熔融还原熔体对粘土砖，高铝砖，镁砖的侵蚀速度很高，镁碳砖抗侵蚀能力比前几种耐火材料强，但不如铝碳砖；对不含碳耐火材料在熔体中的侵蚀是熔渣中FeO及其它氧化物与耐火材料组分的化学反应形成低熔点物熔蚀进入渣相，产生损毁。

In this article,the effects of rare earth during the process of magnesium and magnesium alloys melting,including eliminating hydrogen、deoxygenating oxides e and preventing ignition are introduced,the influence and the correlative mechanisms of rare earth in refining the microstructures of magnesium,improving its mechanical properties at elevated temperature and corrosion resistance are also review...

本文主要综述了稀土元素在镁及镁合金熔炼过程中除氢、减少氧化夹杂、阻燃的应用，以及稀土元素对镁合金微观组织结构的细化、高温力学性能的改善和耐蚀性能提高等方面的作用和机理。

The main conditions necessary for Agate formation are the presence of silica from devitrified volcanic ash, water from rainfall or ground sources, manganese, iron and other mineral oxides that form the white, red, blue, grey, brown or black bands.

玛瑙的主要成因是各类火山灰中二氧化硅、雨水或地下水、锰、铁或其他矿石氧化物共存反应所致，也是玛瑙具有白、红、蓝、灰、褐或黑色多姿多彩纹理的主要原因。

In order to solve chromium waste water by means of electrolyzed deoxidation, we apply polyacrylonitrile carbon blanket as pole, graphite as bipolar plate, positive ion film as diaphragm, to an oxidation-reduction system, in which negative pole electrolyzes and reduces chromium waste water; meanwhile, oxides Fe~{2+} into Fe~{3+} in positive pole.

为了电解还原处理含铬废水，以聚丙烯腈碳毡作电极，石墨板作双极板，以阳离子交换膜为隔膜，组装出氧化还原电池系统。此系统阴极电解还原处理含铬废水，同时阳极氧化Fe2+为Fe3+。电池系统的平均电流效率达92.29%，处理后废水中铬含量小于10-5mol/L，达到国家排放标准

This paper has studied to make use of the electrolyzing method in both chambers that is divided by anion—exchanging membrance based on the past ways of nanoscale materials being invented , to produce the depositions of hydrate and hydrated oxide which are calcined to become the nanoscale oxides.

本文在借鉴以往较成熟的纳米材料制备方法的基础上，着重研究了利用以阴离子交换膜为隔膜两室电解的方法，在阴极室得到制备其纳米金属氧化物的氢氧化物或氧化物沉淀的前驱体，在高温焙烧得到其纳米金属氧化物。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。