查询词典 Valence

By using the calculated results of EET theory, the local valence electron structure elements of residual chemical bonds of Al-Si and Mg-Al alloy melts, that is, the residual bond structure models, were established. From the viewpoint of effect of pressure on melt structure, the essential reason of deviation phenomenon for maximum solution point and eutectic point in thermodynamics equilibrium phase diagram was analysed. Moreover, under pressure condition, the change of thermodynamics equilibrium phase diagram was macroscopic reflection of microstructure change of alloy melt.

运用固体与分子经验电子理论的计算结果分别建立Al-Si、Mg-Al两种合金熔体的剩余化学键的局域价电子结构基本单元即残余键结构模型，从压力对熔体结构作用的层面，分析热力学平衡相图中最大固溶点和共晶点发生偏移的本质原因，并指出压力作用下热力学平衡相图的变化是合金熔体微观结构信息变化的宏观反映。

Tl system 1223 phase ; Mossbauer spectrum ; point charge effective valence model

Tl系1223相；穆斯堡尔谱；点电荷有效价键模型

Chemical bonds and structural theory of organic chemistry 6 class hoursKnow the history of organic chemistry; Grasp the basic theory of organicchemistry, such as structural theory, chemical bonds, resonance theory, atomic andmolecular orbital theory, and valence bond theory; understand polar and non-polarcompounds, dipole moment and know how to express the structures of organiccompounds with different molecular formulas.

了解有机化学发展简史；掌握有机化学结构理论、化学键理论、共振理论、原子和分子轨道理论和杂化轨道理论；了解极性和非极性分子并掌握有机化合物结构的表示法。

Hole - Similar to a positive charge, this is caused by the absence of a valence electron.

空穴 -和正电荷类似，是由缺少价电子引起的。

And the valence of praseodymium and the chromatic mechanism of the pigments were investigated.

该固溶体中未发现+4价的Pr，而主要是以+3价的形式存在于Pr-CeO2固溶体中。

The anodic oxidation reactions of borohydride ion involves a novel and complex reaction system of three hydrogen valence states: protide H(superscript --protium H(superscript 0*-proton H(superscript +. Based on cyclic voltammetry and polarization studies, a multi-step mechanism for the oxidation of BH4-on Cu anode in NaOH solution was presented, and a kinetic expression containing the coverages of BH(superscript - subscript 4) and OH-adsorbed on the surface of Cu anode was deduced by the steady state approximation theory.

鉴于BH(上标-下标 4)阳极氧化反应涉及一个复杂的氢负离子H(上标-下标 4)－氢单原子H(上标 0*)－质子H之间价态转化的新颖反应体系，在循环伏安和极化实验研究基础上，提出了NaOH溶液中BH(上标-下标 4)在Cu电极上氧化反应的多步骤机理，导出了包含表面吸附态BH(上标-下标 4， ad)和OH覆盖率θ和θ的电极反应动力学方程。

Reductant in the reaction of elements in valence increased.

在反应中还原剂中元素的化合价升高。

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他所经营的星夜钢琴网以其极高的人气和行业美誉度享誉业界，并屡次受到投资者垂涎：2005年有人愿出资200万将其收购，2006年又有人将收购价提至1000万，更有虚拟财产评估机构评估该网站身价越5000万然而，26岁网站经营者曾继桂却不为所动，用心组建着自己的经营团队，誓将用自己的智慧和努力，走出网站发展的另一片晴天！

We prepared bulk samples of metastable solid solutions with bcc and fcc structuresin the Fe-Cu system by using shock compression with mechanical alloying, and the magnetization and valence electron were measured and calculated. The saturation magnetic-moment curve versus mumber of electrons per atom at 0K was found to be reasonably similar to the-electrons/atom curve of other transition-metal binary systems.

用机械合金化锻压方法制备了bcc和fcc结构的块状亚稳态Fe-Cu固溶体系统，并对系统的磁化强度、价电子结构进行了测量和计算，从亚稳态 Fe-Cu固溶体的饱和磁化强度Ms-e/a曲线可看出：大约在26.2e/a的区域Ms有最大值，并且在大约28.6e/a的区域接近零。

Objective: To test if self-reference can enhance remembering negative emotional valence words more than semantic processing.

目的：检验自我参照加工是否比语义加工更能促进抑郁症患者对负性效价词的记忆。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。