电子价

According to Johnson's Rule and IR spectra, their possible structures are suggested. The bonding parameters of those complexes are calculated by ESR parameters. And the crystal field parameters are calculated by using electronic spectral data. It can be seen that the vanadyl complexes in the solution are ionic complexes and that the α〓 values of those complexes decrease following the increasing of the N donor replacing the O donor of water on the equatorial plane in those complexes. This means that the covalent bonding between vanadium and ligand increases as Ser, Phen or Bipy replace water ligands. The results show the competitive coordinate law that the coordination reactivity of Phen and Bipy is much stronger than that of Ser. The simulation program of ESR is compiled by the theory of ESR in the present work.

测定了VO-丝氨酸二元体系、VO-丝氨酸-邻菲咯啉三元体系和VO-丝氨酸联吡啶三元体系在不同酸度下（pH=1.0～14.0）的乙二醇／水（V／V=1：1）溶液低温ESR谱，发现不同pH下，溶液中具有不同组成的配合物，根据不同pH下ESR谱的变化，利用Johnson的加合规则并结合红外光谱，推测了它们在溶液中的可能结构；利用波谱参数计算了配合物键参数；利用电子光谱数据计算了配合物的晶体场参数，讨沦了它们的成配特性，结果表明：VO配合物属离子型配合物，随取代水分子的配体（Ser、Phen或Bipy）数目增加，键参数减小，配合物共价性增强，同时得出这些体系中，生物配体竞争配位规律：Phen和Bipy与VO的配位能力比Ser强。

According to family and group of the elementary ionic law table, one drawing is made with ionic radius as ordinate and outer shell electron distribution as abscissas; and another drawing is made with logarithm of ionic radius as ordinate and valences of ionic as abscissas.

依据元素离子律表的组和族，以离子半径为纵坐标，外层电子排布为横坐标作图；以离子半径的数值为纵坐标与离子价数为横坐标作图，得到两套规律性好的曲线。

In the last few years, thanks to the rapid progress of computer technology VB theory redrew attentions of chemists.

近二十年来，由于电子计算机技术的迅速发展，价键理论重新得到了人们的重视。

Through various means (for example, to inject a small number of PN junction carrier) disturbance belt electronic price band Hole and the balance of concentration, according to which non-minority-carrier in the compound and a photon.

通过各种方法(例如向PN结注入少数载流子)扰动导带电子和价带空穴的平衡浓度，致使非平据少数载流于复合而产生光子。

RoHS Directive stipulates that from July 1, 2006, All member states should invest in the market to ensure that the restrictions on the use of electronic and electrical equipment, lead, mercury, cadmium, hexavalent chromium, polybrominated diphenyl ether and polybrominated biphenyls and other hazardous substances.

RoHS 指令规定，从2006年7月1日起，各成员国应确保在投放于市场的电子和电气设备中限制使用铅、汞、镉、六价铬、多溴二苯醚和多溴联苯等有害物质。

From July 1, 2006, the new electronic and electrical products into the EU market, lead, mercury, hexavalent chromium, polymerization bromide biphenyl or polymerization bromide diphenyl ether content must not exceed 0.1% of the weight of the components, the cadmium content of no more than 0.01% of the weight of the host material.

从2006年7月1日起，新投入欧盟市场的电子电器产品中铅、汞、六价铬、聚合溴化联苯或者聚合溴化联苯乙醚含量不得超过该元件的重量的0.1%，镉的含量不得超过所在材料重量的0.01%。

These directives limit the use of six hazardous materials in the manufacture of electronic and electrical equipment: lead, mercury, cadmium, hexavalent chromium (chromium VI or Cr6+), polybrominated biphenyls, and polybrominated diphenyl ether.

这些标准限制了6种有毒材料在电子电气设备生产中的应用：铅，汞，镉，六价铬(chromium VI 或 Cr6+)，多溴联苯，多溴联苯醚等。

Restriction on the Use of Hazardous Substances bans new electronics containing more than agreed-to levels of lead, cadmium, mercury, hexavalent chromium, and polybrominated biphenyl as well as polybrominated diphenyl ether flame retardants.

在关于有毒物质使用的欧洲联邦法律限制新型电子设备中含有超标的铅、镉、汞、六价铬和多溴化联苯、多溴化二苯醚阻燃剂。

According to the empirical rules of influence of the chemical bond on spectrum, electron spectroscopy and Mossbauer spectroscopy, the chemical environmental factor was further defined with the covalency and polarizability of a bond.

根据光谱、电子能谱和穆斯堡尔谱学中化学键对谱线影响的经验规律，进一步利用共价性和极化率定义了化学环境因子这一概念，并发现它能够有效地描述波谱学中化学位移的变化趋势。

Rare earth compound CeNiSn is one of Kondo semiconductors which aredifferent from conventional semiconductors and whose ground state is one of theground states of Mixed Valence and Heavy Fermion Systems.

本工作是对强关联电子体系中混价—重费米子系统的Kondo半导体CeNiSn的研究。

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。