查询词典 valent

This paper summarized the research progress and development trend of reductive dechlorination of PCBs by zero-valent metal.

本文综述了国内外在零价金属还原脱氯降解PCBs领域的研究状况。

Using empirical electron theory of solids and molecules, the valent electron structures of several transition metallic carbides have been evaluated.

运用固体与分子经验电子理论计算了几种过渡族金属碳化物的价电子结构，发现碳化物的主要价电子结构参数主键键能与碳化物的熔点、硬度及生成焓之间存在着很好的相关

The potential-pH equilibrium diagram of three kinds of system had been figured according to the data in literatures,the transformation of different valent state ions had been discussed.

根据已有的电化学数据，绘制了铝钒钼水体系的电位-pH图，并探讨了不同电位下，体系中不同价态离子间的相互转化。

The experiment showed that calcium carbide residue appeared not only neutralization but also flocculation, meanwhile, the Fe ~(2+) and Fe~(3+) from zero-valent iron reduction formed hydroxid to flocculate and furtherly remove 80% chloroform and 10%tetrachloromethane respectively.

在优化的实验条件下，对还原处理的出水用电石渣进一步处理，废水水中的铁离子产生絮凝作用，三氯甲烷和四氯化碳的去除率分别达到80%和10%。

An integral operator I(subscript n+p) defined by Hadamard product is introduced. Making use of this operator, the subclass S(superscript * subscript n+p) of p(superscript -) valent analytic function is defined in the open unit disk, the inclusion relation of S(superscript * subscript n+p+1)S(superscript * subscript n+p) and the best dominant function of differential subordination q1 are obtained. Furthermore, some conclusions are made according to the special parameters A and B.

用Hadamard卷积定义线性算子I，并利用算子I定义在单位圆内的解析的p叶函数类S(上标*下标 n+p)，给出了此函数类的包含关系S(上标*下标 n+p+1)S和微分从属的最佳控制函数q1，并根据参数A，B取不同的特殊值得出了相应的推论。

The results showed that increasing zero-valent iron dose and temperature can enhance the removal rate of molybdate; the maximum removal rate was 96% at pH = 2.0, which decreased with the increase of pH value.

结果表明，随着零价铁投加量的增大和温度的升高，钼的去除率有所提高；在pH=2.0时零价铁对钼的去除率最高(96％)，随着pH值的升高，钼的去除率降低。

Low-valent titanium reagent induced the monomolecular reduction of N-substitutedphthalimides supplied a new method of synthesis hydroxyl lactams. This method was moreeconomic, convenient and in higher yields comparing with other methods reported before,therefore it has practical value.

4低价钛试剂引起邻苯二甲酰亚胺的单分子还原反应提供了一种合成羟基内酰胺的新方法，和文献方法相比，我们的方法试剂便宜易得，毋需溶剂，操作简便，收率也有所提高，具有实用价值。

Based on different linear operators, some of the properties and characteristics of p-valent analytic functions and meromorphic multivalent functions were investigated extensively in this paper.

近年来，基于不同的线性算子，某些p叶解析函数类或亚纯函数类的性质和特征被广泛地研究。

The method defines two types of oriented 4-valent plane graph: G_e and G_o, whose vertices are covered by E-tangles and O-tangles, respectively.

这一方法定义了两种有向4-度平面图：G_e和G_o分别用E-tangles和O-tangles覆盖两种有向4-度平面图的顶点。

Singal-valent mumps and rubella vaccine made in china has a good immunity and persistence of antibody over 3 years,and they can be considered as the effective products preventing epidemic parotitis and rubella.

国产单价腮腺炎和风疹疫苗有较好的免疫原性和三年以上的免疫持久性，可以作为目前我国预防腮腺炎和风疹的有利措施。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。