查询词典 relative permittivity

But ECT technology has the following characteristics: 1 the measured capacitance and its change induced by the measured material concentration variation are very small, but the stray capacitances of co-axial screening cable and CMOS switches are relative very large, so the capacitance detecting is easily affected by the stray capacitances, 2 the electric fields in the sensors detecting region is affected by the permittivity distribution, non-uniformity of the space responsive sensitivity is very high, and the image reconstruction is undetermined.

但由于ECT技术中，首先所检测的微电容量及其因物流相含率的变化所引起的变化量很小，而由相关的连接同轴屏蔽电缆与切换CMOS开关所引入的杂散电容远远大于测量电容，微电容的测量容易受杂散电容等的影响；其次，多电极电容传感器测量区内的电场受介质分布的影响，且测量区内的空间响应灵敏度极不均衡，其影响图像重建的不确定性；其三，ECT中的图像重建，由于其是一个欠定问题的求解，在迭代求解方法中，迭代的初值影响迭代过程收敛到近似解的速度；其四，对于气/固两相流应用而言，由于ECT系统在线标定的难以实现，管壁磨损等因素的影响制约该技术应用于生产工艺中气/固两相流的长期连续检测。

Relative dielectric permittivity and loss angle tangent among them are the two of most important indexes.

相对介电常数和介质损耗角正切是其中的两个重要的性能指标。

Parameter S11 was measured with microwave sensor and vector network analyzer, which was used to calculate relative complex permittivity.

制备了一定含水率不同浓度的CuCl2的PVA样品，用微波矢量网络分析仪和微波传感器测量S11参数，计算得到相对复介电常数。

In general we have two kinds of dielectric constant: the absolute dielectric permittivity, V the relative dielectric permittivity r, Vr = 0 = 1 , 0 means the vacuum dielectric constant, dielectric electrode means of EV \\ V \\ rate.

一般我们有两种介电常数：电介质的绝对介电常数，电介质的相对V介电常数r，Vr＝0＝1＋，0指真空中的介电常数，指电介质的电极化EV\V\率。

This thesis with cold-shrink 25kV cable terminal connector components as the main structure, used finite element analysis method to simulate the following situations (1) with different thickness of stress relief material (2) with different relative permittivity of stress relief material,(3) different geometries of the stress cone ,(4) of a grounding embedded electrode to monitor effects of electrical stress grading.

中文摘要本文以25kV冷缩式电缆终端接头元件为主要架构，使用有限元素分析法模拟(1)电应力缓解材料的厚度改变(2)电应力缓解材料的相对介电系数改变(3)不同的应力锥几何尺寸(4)埋置接地电极时的电场与电位分布状况。

Rat gastrocnemius ; impedance measurement ; relative permittivity ; conductivity ; Cole-Cole equation

大鼠腓肠肌；阻抗测量；相对介电常数；电导率； Cole-Cole方程

Especially, time factor must be considered in GPR data collection because the relative permittivity of underground medium may change with time changing.

由于地下介质电性随含水状态而变化，必须考虑最佳探测时机，避开不利时间段，减少探测工作的盲目性。

The results show that MnO2 powders have a self-grown core-shell structure with diameters of 3～5 μm, the real and the imaginary part of the complex relative permittivity are 8.40～5.35 and 2.66～2.07, respectively, whereas the real and imaginary part of the complex permeability are as small as 1.04～1.14 and 0.03～0.21, respectively.

结果表明：所制得粉体是直径3～5 μm的核壳结构海胆球形MnO2，其复介电常数实部在8.40～5.35，虚部在2.66～2.07；复磁导率实部和虚部都很小，分别在1.04～1.14和0.03～0.21范围内。

The relative permittivity of the Langmuir monolayer on a substrate surface is calculated by the orientation order S with consideration of the length of the permanent dipoles within domain and the distance between the dipole and the substrate.

计算结果表明：对于成份一定的稳定构型单分子层膜，其相对电容率大小除了依赖于分子密度和基底物质的相对电容率外，对分子负电荷中心离基底的距离，以及考虑电偶极子长度的分子区域大小也有不同程度的依赖

Most parameters for the mixture antioxidation oil were studied and they were consistent with GB 2536-90, including transparence, smell, density, solidifying point, flash point, viscosity, acids and water-solubility acids;The viscosity of the antioxidation oil at 20℃～90℃was as same as mineral;And the relative permittivity at 30～106Hz was invariable and it was higher than mineral oil so that the electric field of the antioxidation oil paper insulation was more equilibrious.

研究得到了所研制的抗老化变压器油的参数值：透明度、气味、密度、凝点、闪点、运动粘度、酸值及水溶性酸或碱等，均满足变压器油技术标准GB 2536-90的要求；20℃～90℃之间该油运动粘度和矿物油几乎相等；在30～106Hz频率范围内，该油相对介电常数基本维持恒定，且比矿物油相对介电常数略大；其工频击穿电压远高于矿物油。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新