介电常数

Finally, a SONOS-type memories by using high-κ dielectric materials Praseodymium oxide trapping layers was proposed and demonstrated.

最后，我们使用另一种高介电常数材料当捕陷层制作出了SONOS型非挥发性快闪记忆体，此材料为氧化镨。

Since the output signal from fringing field dielectrometry sensors under a low frequency driving voltage are very low, the shield-drive, signal buffer and band-pass filter are adopted to improve SNR. With the signal gain and phase angle from a transform circuit, the complex permittivity of pressboard are obtained.

鉴于边缘场电容式传感器在低频正弦驱动信号作用下输出的感应信号非常微弱，调理电路采用驱动屏蔽方式进行测量信号缓冲，用带阻滤波器提高信噪比，并利用相应的变换电路求出电容系统的相位角和幅值增益，从而得到绝缘纸板的复介电常数。

The optimized processing parameters including screen print and hot pressing were obtained. In order to reduce error, the method of double-face screen print in key electrode layer and stepped press were used. Ceramics are dense after sintering. The thickness of electrode is about 5μm. The test fixtures based on microstripe for SMD were design and fabricated.

采用平面电感和平板电容结构实现的LC谐振器，由于集总电感的Q值较小以及高介电常数介质基片杂散参数效应，这种结构的谐振器Q值较小；采用新的耦合结构-间隙电容耦合结构，实现谐振器和外电路的匹配耦合，使谐振器和耦合电容在同一层上实现，即单层结构，和传统的平行板电容耦合方式相比减小了耦合电容对位误差。

The on-line density measurement technology with microwave has been narrated as a key part. We has deduced relations between permittivity、the load Q-factor and resonant frequency. And the electromagnetic field for closed cavity 、open cavity has been analyzed. we also discuss the design of cavity that is used in experiment、means for how to stir electromagnetic wave and choice of diameter/length ratio for cavity.

接着重点说明了微波在线密度测量原理，基于麦克斯韦方程组深入推导了微扰情况下介电常数与谐振频率，有载品质因数的关系；分别讨论了封闭谐振腔和开孔谐振腔中的电磁场以及微扰方法中所使用的谐振腔的设计及设计中激励方式、腔长/半径的选择等若干关键问题。

In order to increase the negative refraction bandwidth and the dimension of metamaterials, based on a quadrate structure, a crossing-net metamaterial structure is proposed, and the frequency properties of its permittivity and permeability are simulated.

为拓宽异向介质结构的带宽和维数，在方形环结构的基础上，提出了一种异向介质的交叉网状结构的设计，并对其介电常数和磁导率的频率特性进行了计算机仿真。

The second and third structure movements of polymer involving slowpolarization effect is proposed by summing up a wide variety of experiment results, from Gibbsfunction, the parabola type relation between the reciprocal of slow dielectric coefficient andtemperature are obtained, which properly explains the β transition of polymer.

5归纳大量的实验结果，提出了聚合物的慢极化效应联系着二级和三级结构的运动；参照晶体中的软模理论，认为聚合物的β转变源自恢复力系数的软化；采用唯象理论，得出慢介电常数的倒数与温度T的抛物型关系，聚合物的β转变实验结果证明了理论的预言。

This instrument used the parallel p late capacitor to measure relative dielectric constant of film, which equaled to the ratio of the capacity value full of film and the capacity value full of air. It app lied the equipotential ring technology to reduce the error caused by edge effect in the two p late edges, and greatly increased the measurement p recision and accuracy.

该仪器采用将平行板电容器充满薄膜的电容值与充满空气的电容值相比的方法得出薄膜的相对介电常数，并采用等位环技术，减小了两极板在边缘处产生边缘效应所带来的误差，大大提高了测量的精度和准确性。

A novel finite-difference time-domainmethod,called shift operator FDTDmethod is developed for anisotropic magnetized dispersive media.The recursive relation between operators is used.In this paper,some expressions containing the dielectric constants of magnetized dispersive media are written as rational polynomial function.

给出了一种新的计算各向异性磁化色散介质的有限差分算法，称为移位算子FDTD算法，它利用算子之间的移位递推关系，将一类色散介质的包含介电常数的表达式写成有理分式函数形式，进而导出FDTD中一系列相关量之间的关系。

An improved method for measurement of complex permittivity using six-port reflectometer is presented. Error caused by incomplete superposition between the measured plane and reference plane, which is often in the case of conventional measuring method, is eliminated with the developed novel algorithm by separating the two planes.

提出了六端口反射计测量介质材料复介电常数的一种改进方法，新的算法使测量面与参考面分离，消除了传统测量方法中测量面与参考面无法完全重合引入的误差。

A wavelet modeling method is proposed to analyze the time domain reflectometry waveforms.

对于混凝土材料来说，其介电常数是随频而变化的，要了解这

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。