查询词典 oxides

Catalysts used for abating the pollution of automobile exhaust emissions were prepared by nonprecious metal oxides, such as the oxides of Ⅰ B,Ⅴ B,Ⅵ B,Ⅶ B,Ⅷ B group, alkaline earth group and rare earth elements.

在实验室用模拟汽车排气，评价催化剂的氧化、还原效率，获得了具有较低起燃温度的催化剂(对于CO低于150℃HC为200℃)，机械强度良好，而且可承受高温冲击(耐温可达900～1000℃)。

Thirdly, The preparation of 3-aryl-5-substituted-ethenyl isoxazoles and l-isoxazolyl-2-isoxazolinyl substituted-ethenes was developed through 1, 3-dipolar cycloaddition of nitrile oxides,α-alkylation reaction and another 1, 3-dipolar cycloaddition of nitrile oxides based on polystyrene-supported propargyl selenide.

三、从聚苯乙烯负载的炔丙基硒醚出发，经过腈氧化物的1，3-偶极环加成反应、α-烷基化反应和腈氧化物的1，3-偶极环加成反应固相分别合成了3-芳基5-取代--乙烯基异噁唑和1—异噁唑—2—异噁唑啉取代的-乙烯。

The results indicated that the chemical fraction composition characteristics of heavy metals are different. Cu mainly existed in organic/sulphidic fraction and residual fraction; Pb mainly existed in carbonates, Fe-Mn oxides and residual fraction; Cd mainly existed in carbonates and Fe-Mn oxides fraction; Cr mainly existed in residual fraction.

结果表明，不同重金属在消落区沉积物中形态分布各异，Cu主要以有机物及硫化物结合态和残渣态形式存在，Pb主要以碳酸盐结合态、Fe-Mn氧化物结合态及残渣态存在，Cd主要以碳酸盐结合态、Fe-Mn氧化物结合态存在，Cr主要以残渣态存在。

When examining the relative positions of the valence band and the conduction bands in Table 2, it is evident that it is in fact thermodynamically feasible for the generated electrons in titanium dioxide to be transferred to the lower lying conduction band of any the iron oxides phases present, while the photogenerated holes may also be transferred to the upper lying valence bands of the iron oxides.

当检查原子价的比较位置的时候表 2 的乐团和传导乐团，它是显然的那它事实上热力学能实行对钛二氧化物的被产生的电子被转移对比较低的横躺传导乐团任何的那氧化铁时期呈现，当 photogenerated的时候洞也可能被转移到上面的横躺原子价氧化铁的乐团。

In this paper, the effect of composition of transition metal oxides obtained by the orthogonal design , atmosphere and the nucleation agent on the gloss of metal glazes in ferric oxides was discussed.

采用廉价的铁系氧化物，研究了正交设计的过度金属氧化物组成、气氛、晶核剂等因素对釉面金属光泽的影响。

Fe-Co and Fe-Co particles have similar surface, which all consist of iron oxides rather than cobalt oxides. Borides can not be formed by the boron atoms from FeB alloy.

Fe-Co和Fe-Co超微粒子的表面结构很相似，都存在铁氧化物层，两种粒子表面都不存在钴氧化物。

By calculating thedata of electrochemistry and electrospectrochemistry the oxides of l electronand 2 electron transferring were discovered, so that a possible reactionmechanism was proposed and the amount of all oxides was worked out.

从而得到5-羟色胺电氧化机理，由此计算出各氧化产物在电解后的生成率。

A series of transition metals, transition metal oxides and composite metal oxides were investigated as catalysts for phenol hydroxylation. Twelve new types of phenol hydroxylation catalysts with good activity and application prospect were reported.

考察了一系列过渡金属氧化物、复合金属氧化物及金属作为苯酚羟基化作用催化剂的反应性能，筛选出12种具有良好活性与应用前景，尚未见文献报道的苯酚羟基化新型催化剂。

By and large seed 7-12, 4-6 species are the main materials such as quartz sand, limestone, feldspar, soda ash, boric acid, lead compounds, barium compounds, and so on, according to theintroduction of the oxide in the glass structure of the role, Into the glass forming oxides of raw materials, intermediate raw materials of oxide, network-oxide materials, according to the introduction of the nature of the oxide, acid oxides can be divided into raw materials, base metal oxide materials.

大体由7-12种组成，主体料有4-6种，如石英砂、石灰石、长石、纯碱、硼酸、铅化合物、钡化合物等，按所引入氧化物在玻璃结构中的作用，可分为玻璃形成氧化物的原料、中间体氧化物的原料、网络外体氧化物的原料，按所引入氧化物的性质，可分为酸性氧化物的原料、碱金属氧化物的原料。

The results showed that flooding significantly increased the content of amorphous iron oxides and P adsorption capacity accompanying with a sharp decrease of crystalline iron oxides and P desorption in two tested soils.

结果表明，淹水使土壤中结晶态氧化铁含量明显减少，无定形氧化铁和土壤对磷的吸附量急剧增加，磷解吸下降；落干则使之发生相反的变化。

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。