原子价

The diameter of nano-particle is small and its surface energy is high. Atomic valence bond of particle surface is not saturation and surface atoms have extremely physical and chemical activity. So, nano-particle is apt to agglomerate to make difficult to bring its excellent properties to completely play and to modify polymer.

纳米粒子粒径小，表面能大，且粒子表面的原子价健处于不饱和状态，表面原子有极大的物理与化学活性，因此纳米粒子非常易于团聚和吸附，而使得其拥有的性能难以充分发挥，从而失去应有的对高分子材料的改性作用。

Beryllium has valence 2 in all its compounds, which are generally colourless and taste distinctly sweet.

铍在所有化合物中的原子价都是2，这些化合物通常都无色，有独特的甜味。

It serves as a red colorant for glass and glaze s.

硒在化合物中的原子价有2、4和6三种。

It serves as a red colorant for glass and glazes.

硒在化合物中的原子价有2、4和6三种。

And the Randic-Kier index,χ, is defined as,χ=∑C, whereC, and δ is the calculated valence delta for the carbon atom or heteroatom.

上标 mχ定义为χ∑C，子图项，δ为碳原子或杂原子价点价。

Chapter 4 describes the synthesis, structural characterization and properties of anovel organic-inorganic hybrid compound, F〓〓BEDT-TTF =bis(ethylenedithiotetrathiafulvalene, which has been synthesized through thereaction of the pre-intercalate Fe〓PS〓〓(phen = 1.10-phenanthroline) with〓 Compared with the pristine FePS〓, the lattice spacing isexpanded by about 4.0〓, indicating that the molecular ring plane of BEDT-TTF isarranged parallel to the layer of the host.

通过红外光谱推测客体BEDT-TTF在层间以中性状态存在。X-线光电子能谱揭示在夹层化合物Fe〓PS〓〓中磷原子和硫原子在硫代亚磷酸根负离子簇中各存在两种化合价态，其中一种价态与纯主体或预夹层化合物〓〓中的磷原子和硫原子价态一致，而另一种价态却比纯主体FePS〓或预夹层化合物Fe〓中的磷原子和硫原子价态高。

Some molybdenum compounds (in which it has various valences) are used as pigments and catalysts.

有些钼的化合物(钼在化合物中可以有不同的原子价)可以做颜料和催化剂。

Some molybdenum compounds (in which it has various valence s) are used as pigments and catalysts.

有些钼的化合物(钼在化合物中可以有不同的原子价)可以做颜料和催化剂。

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。

Chemistry having a valence of two or having two valences.

有二个原子价之一的，或有两个原子价的。

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。