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1)  effective permittivity
等效介电系数
1.
Improved formula to calculate effective permittivity of chemical reaction;
计算化学反应中等效介电系数经验公式的改进
2.
The study on the effective permittivity of mixed solution is an important work to Microwave-Chemistry.
介质混合物的等效介电系数是微波化学研究中的一个重要内容。
3.
One of the most important studies in microwave chemistry is to obtain the effective permittivity of chemical reaction.
本文采用开槽同轴谐振探头首次测量了乙酸乙酯皂化反应对微波的反射系数 ,并用遗传算法获得了微波频率下该反应的等效介电系数
2)  complex effective permittivity
复等效介电系数
1.
A few key problems of interaction between microwave and chemical reaction, such as complex effective permittivity of chemical reaction, simulation of microwave heating on chemical reaction and non-thermal effect of microwave, are investigated in th.
从微波与化学反应相互作用的几个关键问题:化学反应的复等效介电系数,微波加热化学反应的数值模拟以及微波非热效应等方面进行了研究和讨论。
3)  effective permittivity
等效介电常数
1.
One of fundamental studies in microwave chemistry is to measure effective permittivity of chemical reaction precisely.
溶液中化学反应的等效介电常数是微波化学研究中的重要内容,等效介电常数的精确测量是研究微波与化学反应系统相互作用的基础。
2.
According to the analogy concept of series-parallel connection of the capacitance, the approximate formulae of effective permittivity along x,y,z direction for various inhomogeneous unit grids are deduced.
针对差分法中难以近似处理不同介质分界面处单元差分网格中沿x,y,z轴各方向等效介电常数值的问题,提出了将"电容串并联"的电路概念引入于各方向等效介电常数的近似计算中,并导出几种非匀质单元网格中等效介电常数的计算式。
3.
The effective permittivity of the mixture with carbon volume content 1% was calculated by the strong fluctuation theory combining with Maxwell-Wagner theory;and the EM wave absorbing property of a laminated model filled with carbon coated EPS beads was predicted through calculation.
将涂层球体混合体系作为密实整体考虑,计算了炭黑含量1%时的等效介电常数,并用计算结果预测了吸波性能。
4)  equivalent permittivity
等效介电常数
1.
Research on the model of multilayed multiconductor system with equivalent permittivity;
用等效介电常数研究多层多导体系统模型
2.
A concept of equivalent permittivity for the planar structure of printed circuit board (PCB) was presented.
提出了用于印刷电路板 ( PCB)扁平多层介质结构的等效介电常数的概念 ,使在 PCB结构中电容提取的计算量减少到自由空间中电容提取的量级 ,并保持相当的精度 ,此外还可与目前计算电容效率最高的多极加速法兼容 。
3.
It is pointed out that the equivalent permeability and permittivity of honeycomb-structured absorbing materials are smaller than those of the absorbing layer,but the equivalent permittivity is reduced more significantly,so the equivalent permeability is more close to the equivalent permittivity.
根据强扰动理论,在长波长近似条件下推导出蜂窝结构吸波材料等效介电常数和等效磁导率的计算公式。
5)  equivalent dielectric constant
等效介电常数
1.
By combining the attenuation with the reference,the system model of equivalent dielectric constant for rain medium is constructed.
得出了电磁波在有耗介质中衰减分贝数的表达式,将这种衰减与文献资料相结合,建立了雨介质对电波衰减的等效介电常数的系统辨识模型,得到了该介电常数与降雨率、电波频率的函数表达式。
2.
The general recursion formula of equivalent dielectric constant of multi-shell particles is derived.
研究了梯度壳层球形颗粒复合体系的有效介电响应,推导了具有任意多壳层的球形颗粒的等效介电常数的一般递推公式;用微分有效偶极近似的方法推导出任意介电梯度形式球形颗粒的等效介电常数的一般微分方程,并以壳层的介电常数为半径的幂函数形式为例,得到了梯度壳层球形颗粒的等效介电常数。
6)  negative dielectric constant
负等效介电常数
补充资料:介电常数温度系数
分子式:
CAS号:

性质: 一定温度范围内、温度每升高1℃时介电常数的相对平均变化率。表达式为:(式中,αε为介电常数的温度系数,℃-1;ε为介电常数,F/m ;Δε为温度升高后介电常数的变化量;Δt为温度的升高值,℃)。对陶瓷介质材料介电常数温度系数αε也常用TKE或T表示。温度变化范围通常为-25~+85℃或-55~+125℃。TKE的数值是材料重要的电参数,用它可作为许多陶瓷介质材料分类的依据,即有正、负和零温度系数材料之分。不同材料的介电常数温度系数可具有不同的用途。

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