查询词典 oxidation-reduction

REE plays an important role in rec ognizing the boundaries of sequence and system tracts and reconstructing sedime nt lithofacies paleogeographic conditions, including ancient water depth,ancie nt salty, pH value and Eh value of water body,oxidation and reduction conditi on and eustacy of lake level.

稀土元素对识别层序、体系域边界及恢复层序框架内的沉积岩相古地理(古盐度、古水深、水体的pH及Eh值、氧化还原条件、湖平面升降变化)都具有重要意义。

Based on properties of the materials analyzed and the main reactions in high-temperature smelting process,a mathematical method was used to establish the oxidation-reduction equilibrium equation of lead button formation in fire assay.

根据分析物料的性质及在高温熔融过程中的主要反应，运用数学方法确立控制铅扣的氧化还原平衡方程式，并以此推导出几种矿物的应用公式。

In this research, large volume stainless pots, high－quality pottery pots and enamel pots, instead of traditional small volume pottery pots, were used in storing several kinds of fresh liquor like "Shuanggou Liquor" etc.and the analysis of stored liquor by gas chromatography and atomic absorption spectrum indicated that the application of large volume stainless containers, instead of the traditional pottery pots, could not only advance liquor aging , produce flavour and remove precipitate, develop soft liquor style, stabilize and improve liquor quality,harmonize the balance of components , decrease liquor loss and liquor storage space,but also promote oxidation , reduction, esterification and molecular hydrogen bond association in the process of liquor storage.

对&双沟酒&等各香型酒，利用大容器的不锈钢罐、优质陶缸和搪瓷罐代替传统小容积陶坛或陶缸贮存新酒作了试验研究。采用气相色谱和原子吸收光谱对贮酒分析，得出采用不锈钢等大容器代替传统小陶罐贮存酒，不但可使酒在贮存过程中进行氧化、还原、酯化和分子氢键缔合作用，促进酒体老熟去杂增香，使酒体柔和老熟、成分平衡协调，稳定和提高酒质；而且还可以降低酒的损耗和减少贮酒库占地面积。孙悟

This paper reviews the mechanism of the phase transfer catalytic reaction according to the different compositions of catalytists, including quaternary ammonium salts,polyethylene glycols and grown ethers as well as application of the PTC in Organic synthesis , such as the reaction of,nucleophilic substitution,addition,condensation,oxidation-reduction and so on.

综述了在不同催化剂结构下所遵循的相转移催化反应机理，包括季铵盐类、聚乙二醇类及冠醚类催化机理，以及相转移催化在有机合成中的应用，如亲核取代反应、加成反应、缩合反应、氧化还原反应

The'black bottom Layer'of ore bodies is in fact a series of schist mylonites which are rich in graphites and sulphides. It can produce a very stable natural electric field and form an oxidation- reduction geoelectric cell in practical geological environment.

通过综合测试研究，指出金山地区矿体的&黑色底板&实际上是一套富含石墨、硫化物的千糜岩，在客观地质环境中可以产生比较稳定的自然电场，形成氧化还原地电池。

The analysis of decomposition mechanisms of the catalyst surface revealed that one of the mechanisms is that activated gas phase O2 captures the hydrogen of the organic pollutants to produce free radicals, which then initiate the catalytic reaction, and produce CO2 and H2O ultimately; and the other mechanism is that the activated organic compounds attack the crystal lattice oxygen, which reduces the valances of the transition metals, then the oxidant of the oxygen oxidizes the transition metals to high valances, which realize the self oxidation-reduction of the catalyst.

催化剂表面有机物降解的机理分析表明，一种反应机理为气相中的O2活化后直接夺取有机污染物的氢，产生自由基，并引发催化反应，最终生成CO2和H2O；另一种反应机理为活化后的有机物直接进攻催化剂的晶格氧，并且使得过渡金属由高价态变为低价态，反应气中的O2再将低价态的金属氧化为高价态，实现催化剂自身的氧化还原循环。

This work is based upon the characteristic of an enzyme capable to recognize a particular molecule through an oxidation-reduction effect. In this study, the uricase is utilized as the sensing components of our sensor system to initiate biological and subsequent electrochemical reactions. After the reactions, the output infinitesimal currents are transformed into voltages shown as electrical signals.

本研究是利用酵素能够藉由氧化还原作用以识别特定分子的基本特性，使用尿酸酶做为感测器系统之生物电化学反应的感测元件，再将输出的微小电流转换为电压并呈现一电讯号。

Effects of hydrogen reduction time, hydrogen content and redox circulation on C O oxidation activities of CuO-CoO/Al2O3 and CuO-Ce2O3/Al2O 3 combustion promotors were investigated.

对 CuO-CoO/Al2O3和 CuO-Ce2O3/Al2O3助燃剂受 H2还原时间、还原 H2 含量，以及多次还原-氧化循环处理后对 CO 氧化活性的影响在实验室进行了研究。

In this article,tungsten trioxide was selected as the raw material to producing ultrafine and homogenous tungsten powder by oxidation-reduction method through 5 Deoxidizations and 4 oxidations.

选取三氧化钨为原料，通过5次还原4次氧化制备出超细钨粉，所得金属钨粉的平均粒度约为0。

In this article,tungsten trioxide was selected as the raw material to producing ultrafine and homogenous tungsten powder by oxidation-reduction method through 5 Deoxidizations and 4 oxidations.

选取三氧化钨为原料，通过5次还原4次氧化制备出超细钨粉，所得金属钨粉的平均粒度约为0.38μm，比表面积高达3471.79 m~2/kg。

I can not negligent, he should do what?

我不能不在意了，他要做什么呢？

It is very dangerous to swim in the river alone.

一个人到河里游泳是很危险的。