电荷密度

The surface charge density in depletion mode was increased, and in weak inversion mode was reduced under the influence of the valley-orbit splitting.

对于耗尽区和弱积累区，由于能级分裂的影响，电容的表面电荷面密度将分别有所增加和降低。

The electronic structures of Dawson anion(S2Mo18O62)4- have been calculated by the discrete variational method coupled with the first principal density functional theory.And the comparison with Keggin anion(SMo12O40)2- has been made.The results show that the electrons delocalize around the all anion.But the difference of the electronic distributi on of polar and equator sites exists.

使用第一原理密度泛函理论中的离散变分方法对（S2Mo18O62）4-的电子结构进行了理论计算，并与Keggin结构（SMo12O40）2-的电子结构作了比较分析，结果表明，（S2Mo18O62）中的电子离域地分布在整个阴离子骨架中，但极位和赤道位原子的电荷分布有明显差异。

By the B3LYP calculation of DFT, the difference in changes of energy and charge of ion probe C〓 and C〓 interacting with hBN and graphite respectively and the difference in frontier orbital energy level reveal difference in electroaffinity of hBN and graphite. It could be indicated that hBN only shows weak electropositivity, and will not be able to accept electrons from metal.

根据密度泛函B3LYP方法的计算结果，从六方氮化硼与石墨的前线轨道能级和两者对离子探针的作用能及C〓和C〓的电荷变化不同所表现出的在电亲和性上的差异，揭示了金属难以插入六方氮化硼层间的原因是六方氮化硼仅显弱的电正性，不能接受金属转移来的电子。

The expressions of current density and the Faradaic Impedance for the three-step electrode processes involving chemical adsorption,charge transfer and desorption steps in the presence or absence of a chemical competitive reaction have been derived in terms of linear condition in this paper,by which the effect of the chemical competitive reaction on the main reaction was analyzed.

在线性条件下，推导了由化学吸附、电荷传递、化学脱附三步骤的电极过程在有化学竞争反应条件下的电流密度和法拉第阻抗的表达式，分析了不同条件下化学竞争反应对主反应的影响，并使用等效电路对可能出现的阻抗结果进行了理论描述。

At first,the curve of charge distribution,ionizable state of nonisothermatity sphere,Was obtained by computer to calculate ionized state according to distribution data of temperature and dinsity within Earth. Secondly,the pussibility of microgravitational testonosphere,Within the isothermality sphere,was found by balance between pressure and volumetric forcein Earth's interior.The thickness is 1 000 km or so.Finally,the result come into commom use various geophysical process withi...

首先依据地球内部温度和密度不均匀分布数据，用计算机计算它的电离状态，得到非等温分层电离状态的电荷分布曲线；其次从地球内部存在的流体压力与两类体积力：重力和静电力的平衡方程讨论中，发现在某一等温层内可能存在微重力构造圈，其厚度约为1000km左右；最后在地学研究向整体化和深部化发展趋势下，预期这个结果将有助于理解地球深部发生的各种物理过程且与地震S波在核－幔之间层中消失观测事实相一致。

The field emission current that STM is operated in field emission mode was calculated by simulation charge method. The calculated results take account of planar and nonplanar emission models respectively. These data are helpful to know the character of STM.

论文对STM的工作原理进行了理论分析，采用模拟电荷法计算了STM工作在场发射状态下，平面和非平面尖端模型时的电流、电流密度分布和电场分布，为进一步认识STM的工作特性提供了数据。

Simulative results show that the electron beam can be transported in the unmagnetized plasma-filled for two reasons. The first, the plasma neutralizes the majority of the space charge forces within the beam. The second, radial electric field generated by electron beam interaction with the plasma leads the beam to converge along axis. By PIC simulation, we find that atomic mass of the background ion effects on the Characteristics of the plasma-filled devices.

非磁化等离子体填充的RBWO-FEL的模拟表明只有在一较窄的背景等离子体密度范围内，电子注才能良好传输，产生泵波及激光功率输出，并都存在有峰值功率点，同实验观测到的结果完全吻合；该范围内，电子注的传输是由于背景离子中和了注中径向发散空间电荷力及注在等离子体中产生的径向的电场使注在轴向汇聚。

Space charge was greatly decreased by blending a small amount of chlorinated polyethylene into LDPE. At the same time, The initiation voltage of short circuit treeing after the positive and the negative dc pre-stress were increased by 26. 8% and 36. 3% respectively.

通过对电老化的纯聚乙烯及含自由基清除剂的聚乙烯的高场强电导的研究，结合空间电荷限制电流理论，计算了老化过程中聚乙烯和含自由基清除剂的聚乙烯试样的陷阱能级密度分布。

It was also showed by the results of linear polarization and impedance spectroscopy that hydrogen storage alloys coated could increase the exchange current density I0 and reduce the electrochemical reaction resistance, illustrating that the surface coating could increase electrocatalytic activity and enhance the diffusivity of electric charge in alloy surface, so that the high-rate discharge performance of the coated electrode was improved.

线性极化扫描和电化学阻抗图谱分析结果表明，包覆Cu、Cu-Co及Cu-Ni处理改善合金电极的交换电流密度I0，降低电化学阻抗，说明包覆处理改善合金表面的电催化活性，加快合金表面电荷的迁移速率，从而提高高倍率放电能力。

The bonding characteristics of these conformers have been investigated with NPA, AIM and NBO analysis.

用自然布居分析、电子密度拓扑分析以及自然键轨道分析研究了Im与CA的结合特征，表明电荷转移作用和氢键作用对复合物的稳定性起重要作用。

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。