查询词典 reciprocal dielectric constant

The vertical electric field of the buried layer is enhanced due to the low k of the dielectric buried layer at the drain side,the electric field in the drift region is modulated by the compound dielectric layer with different k values,and both increase the breakdown voltage of the device.

CDL SOI结构利用漏端低k介质增强埋层纵向电场，具有不同k值的复合介质埋层调制漂移区电场，二者均使耐压提高。

From the theory of dielectric breakdown, the mathematic method was used to describe the whole course during which the dielectric captured the electric charges that was immitted by electrode.

从电介质的击穿机理出发，用数学方法描述了电极注入电荷被介质捕获的全过程，详细分析了电介质的击穿特性并得出了电击穿现象的理论公式，通过同成分铌酸锂晶体和掺锌铌酸锂晶体的极化和击穿实验对理论分析的结果进行了验证，试验现象与理论分析吻合较好。

In this paper, by means of finding the solutions of Maxwells equitions which have a tensor dielectric permittivity,the wave equitions were obtained in rotation dielectric under the condition of longitudinal direct current magnetic field.

本文求解张量介质电常数条件下的麦克斯韦方程，导出了纵向场作用下旋光材料的波动方程。由于电场与磁场是互相耦合不能单独存在，因而引入了孪生标量波的概念，并证明了该标量波满足亥姆霍兹方程。

The aim of this thesis is to explore new MWDC with cation-deficient perovskite structure in A_5B_4O_(15) system. According to the characteristic of A_5B_4O_(15) perovskite structure, series of new titanates / tantalates Ba_(5-x)La_xTi_xTa_(4-x)O_(15)(x=1~3) were prepared, characterized. The dielectric properties were measured. Furthermore, the effects of Nb~(5+) substitution Ta~(5+) at B-site in Ba_3La_2Ti_2Ta_2O_(15) ceramic on structure and dielectric properties were studied.

本论文的主要目的是在A_5B_4O_(15)系列中探索新型类钙钛矿结构高性能微波介质陶瓷，进行了Ba_(5-x)La_xTi_xTa_(4-x)O_(15)(x=1～3)系列钛钽酸盐陶瓷的制备、结构与介电性能研究工作，并研究了材料Ba_3La_2Ti_2Ta_2O_(15)的B位Nb~(5+)离子取代Ta~(5+)离子对材料结构和介电性能的影响。

It is indicated that the dielectric loss factor of the epoxy resin impregnated paper insulating bushing is generally higher than thatof the oil impregnated paper insulating bushing of the same voltage level; the tests should be strengthened when notable variation is found in the insulation dielectric loss factor and capacitance; when the variation is greater than 10%,the bushing must be replaced.

最后指出，环氧浸纸绝缘套管的介质损耗因数普遍高于同等电压等级的油浸纸绝缘套管，当发现绝缘介质损耗因数和电容值发生较明显变化时，应加大测试密度，当变化量大于10%时，必须更换套管。

Appling the method to multi-channel filter design, we find that the filter efficiency can improve about 50% when the dielectric rod radius is proportion with ransonant cavity dielectric rod radius.

将其应用到多信道滤波器的设计中，发现当其半径与相应缺陷介质柱半径的大小成正比时，各信道的耦合效率均能提高50%左右。

First, the effects of magnetic RAM relaxation time and the rise-time of incident pulse signal on reflection signal are discussed, the relationship between the rise-time of incident pulse and relaxation time based on the energy of reflection signal is revealed. Then, the effects of magnetic hysteric, susceptibilities and saturation upon reflection signal are analyzed, the results reveal the reflection of RAM target and UWB signal design. In the meantime, dielectric relaxation time effect about dielectric RAM target is analyzed simply, and the effects of relaxation time and the width of incident pulse upon reflection signal are probed. Finally, a few RAM targets are measured in the chamber using the impulse radar experiment system which is developed by the team of anti-stealth impulse radar on Department of Electrical Engineering, National University of Defense Technology. The experimental results show the similarity of the rule of echos with the theory. From the compared results of different tagets, we concluded, compared with 15% wideband sinusoidal signal, the impulse signal has increased 10～12dB energy from the same loaded RAM target; this, in turn, shows the nonlinear effects of RAM to the echoes, and the potentiality of the impulse signal to RAM targets.

首先分析了磁性RAM的弛豫时间及入射脉冲信号的上升时间对反射信号的影响，从反射信号能量角度出发，给出了入射脉冲上升时间与弛豫时间的关系；接着分析了磁性RAM的磁滞特性、磁化率及磁化强度对反射信号的影响，给出了RAM目标辐射和有关UWB信号设计的一般性结论；其次，对介电RAM的弛豫时间效应作了简单的分析，探讨了介电弛豫时间及入射脉冲宽度对反射信号的影响；最后利用国防科技大学电子技术系&反隐身冲激雷达技术研究组&研制的冲激雷达实验系统，在微波暗室中对几种不同的RAM目标进行了测量，结果表明：其反射波形的基本规律与上述理论分析相一致；从各种不同目标回波的能量对比结果得出，涂覆RAM目标对冲激信号的吸收比15％带宽的正弦信号要小10～12dB，证实了RAM的非线性效应对回波的影响，也证实了冲激信号反隐身的潜力。

Have discussed liquid dielectric breakdown theory and sundry factors influencing liquid dielectric breakdown voltage, and put forward electric spark discharge model.

论述了液体电介质的击穿理论，分析了各种因素对液体电介质击穿电压的影响，提出了电火花放电模型。

Curing kinetics of epoxy resin and the effects of different compositions on curing reaction were researched by using the differential scanning calorimeters. Relationship between curing temperature and curing converting rate had been studied. Curing conditions for the system were determined. Modified nano-Al2O3/epoxy resin and core shell/epoxy resin composites were prepared by means of blending method. The influence of the composition on the properties was discussed. The thermal and dielectric properties of these composites were investigated using differential scanning calorimetry, Thermogravimetry and dielectric analyzer.

首先，论文通过差示量热扫描仪分析研究了环氧树脂与酸酐固化体系的固化反应动力学及固化工艺；然后，通过共混法和超声分散法制备了一系列纳米氧化铝/环氧树脂及核壳粒子/环氧树脂两相复合材料；进而通过DSC及热重分析仪测试了复合材料的玻璃化温度、热降解温度等热学性能，并采用介电分析仪测试分析了复合材料的介电常数、介电损耗等介电性能，讨论了组成对复合材料的热学性能及介电性能的影响。

A process for making an electronic device which comprises applying a nonaqueous plate-resistant ink by ink jet printing to selected areas of a dielectric substrate, optionally laminated with an electrically conductive metal, exposing the plate resistant ink to actinic and/or particle beam radiation to effect polymerisation, adding one or more metal layers by electrolytic or electroless deposition, the upper layer of which is an etchresistant metal, removing the polymerised plate-resistant ink with alkali and finally removing the electrically conductive metal which are optionally directly laminated to the dielectric substrate and not protected by an upper layer of etch-resistant metal by chemical etching wherein the plate-resistant ink is substantially solvent-free and comprises: A 30 to 90 parts acrylate functional monomers free from acid groups comprising mono- or higher functionality wherein 5 to 95% by weight are mono-functional monomers; B 1 to 30 parts acrylate functional monomer containing one or more acid groups; C 0 to 20 parts polymer or prepolymer; D 0 to 20 parts radical initiator; E 0 to 5 parts colorant; F 0 to 5 parts surfactant; and where the ink has a viscosity of not greater than 30 cPs at 40 DEG C and all parts are by weight.

一种制备电子装置的方法，所述方法包括以下步骤：通过喷墨印刷在任选层压了一种或多种导电金属的介电底材的选定区域涂覆非水的阻沉积油墨，将所述阻沉积油墨暴露在光化辐射和/或微粒束辐射中以完成聚合，通过电解沉积或无电沉积增加一层或多层金属层，其中最上层的金属层为一种或多种阻蚀刻金属，用碱除去聚合的阻沉积油墨，最后通过化学蚀刻将任选直接层压在所述介电底材上并且不被一种或多种阻蚀刻金属的上层保护的导电金属除去，其中所述阻沉积油墨基本不含溶剂，并且包含以下组分：A30-90份不含酸基团的丙烯酸酯功能性单体，所述单体包括单官能或多官能单体，其中5-95％重量为单官能单体；B1-30份包含一个或多个酸基团的丙烯酸酯功能性单体；C0-20份聚合物或预聚物；D0-20份自由基引发剂；E0-5份着色剂；和F0-5份表面活性剂；其中所述油墨的粘度在40℃下不高于30cPs，并且所有的份数以重量计。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。