常数层

Combined with experimental results and results of theoretical calculation, by means of mathematical analysis, the charge distribution in a flat double layer is investigated.

结合实验测试结果和理论计算结果，通过数学分析探讨了平板双电层中的电荷分布描述问题，考虑介电常数的变化情况将更好地表示实际的双电层电荷分布。

The results suggest that the model proposed in this study for the porous layer with linearly distributed conductivity and dielectric constant can be expected to apply to other heterogeneous systems as well as membrane systems.

所提出的电导率和介电常数线性分布的多孔层的介电模型，也可用于具有其他电导率、介电常数分布规律的体系。

Based on the classic composites laminates theory,the stiffness matrix and the equivalent damping matrix of the laminates which can be described by elastic constants and damping constants were determined.

根据经典层板理论分别推导出了显含弹性常数和显含阻尼系数的纤维增强复合材料层板的刚度矩阵和等效阻尼矩阵。

It is a organic hexahydric weak acid. In different acidity, the dissociation degree and the color of reagent solvent were different also. Determined and draw the absorption curve of reagent in varies acidity, and figured out the dissociation constant by Perisic-Janjic method; the complex ratio of the reagent and bismuth was determinated by mole ratio method and continuous variation method; The apparent stability constant of the complex was calculated, the mechanism of dissociation and coordination were discussed.

2，6—二溴4—硝基偶氮氟胂是本实验室合成的测定铋的一个较好的试剂，对其进行了进一步的研究，在用柱层析法对其进行了提纯后，测定了试剂在不同酸华东师范大学硕：l：学位论文摘要度下的吸光度和最大吸收波长，绘制了其吸收曲线，用Perisic一Janjic法计算了试剂的六级离解常数；用摩尔比法和连续变化法测定了试剂与秘形成的配合物的络合比：计算了配合物的表观稳定常数，研究了其离解和配合机理，为筛选高效有机显色剂提供了理论依据。

In the frequency domain, the transmission ratios of electromagnetic Gaussian pulses are computed and we analyzed the effect on defect mode properties of unmagnetized photonic crystals produced by its periodic constant, parameters of plasma and parameters of the defect layer, such as its dielectric coefficient, length and position.

从频域角度分析得到微分高斯脉冲的透射率，并讨论该光子晶体的缺陷层介电常数、厚度、位置、光子晶体的周期常数和等离子体参数对其缺陷模的影响。

The material compositions are selected from Pb(Ni1/3Nb2/3)O3-PbZrO3-PbTiO3 family and they are used as the four layers in the new FG piezoelectric actuator.The piezoelectric constants and dielectric constants of the materials are gradated oppositely in the thickness direction, because this special structure of the FG piezoelectric actuator has an advantage over the traditional actuators in internal stress distribution.

这种新型功能梯度驱动器由4种基于Pb(Ni1/3Nb2/3)O3-PbZrO3-PbTiO3系列的材料复合而成，且4层材料的压电常数和介电常数在厚度方向上的梯度变化相反，这种梯度结构能使驱动器结构内部的应力分布优于传统弯曲驱动器。

The flow-field around a hemisphere and a flat-nosed cylinder in the shock tube is simulated numerically by using non-equilibrium Navier-Stokes equations with an air chemical model of 5 species 17 reactions, and the catalytic rate constant of surface materials such as Pt, SIC:, Ni and a flight vehicle materials is determined by using the heat transfer rate of testing in the shock tube and the distribution of heat transfer rate along with the catalytic rate constants.

用5组分17个化学反应Durm-Kang空气化学模型和轴对称热化学非平衡Navier-Stokes方程，对激波管中球头和平头圆柱模型绕流流场进行了数值模拟，给出了驻点热流随催化速率常数变化的分布，并根据激波管实验测量的热流值确定了表面材料Pt、SiO2、Ni和某种飞船材料的催化速率常数，建立了数值分析高焓流动边界层催化特性的软件。

By calculating the effective dielectric constant of witecaps layer, the impactsof bubbles and thickness of whitecaps layer on the seawater emissivity are included inour model.

通过计算白冠层中的有效介电常数，该模式考虑到了白冠层的有效粒子的气泡结构、泡沫层厚度等物理参量对海水发射率的影响。

As the sacrifice layer was obviated by HF solution, the bilayer will roll up spontaneously by strain release caused by lattice constant mismatch. Through this principle, we can fabricate self-rolled up microtubes.

同时在bilayer的下方成长一层牺牲层，当牺牲层被HF蚀刻去除的同时，bilayer会因为晶格常数不匹配而产生内部strain release的效果，而制作出自发卷曲的微米管。

When above Curie temperature, crystal lattice occurs at the high-resistance layer and the ferroelectric constant decreases quickly. The potential barrier increases because the dielectric constant drops in accordance with the Curie-Weiss Law.

但在居里温度以上时，高阻层发生晶格转变，铁电性消失，介电常数急剧减小，由于介电常数按居里-外斯定律下降，所以势垒随之升高。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。