查询词典 impedance

It also provides more flexibility to allocate the resonate frequencies of interest and broader bandwidths at each operation frequency as the impedance ratio of the SIR changes.

通过调节SIR上传输线的阻抗，可以在工作的双频段上灵活地调节耦合器谐振频率的位置和耦合器的带宽。

At IMHz the impedance change ratio in layered films is much lar...

多层膜在1MHz附近即可出现远大于单层膜的阻抗变化比。

The theoretical results of the radiation characteristics such as input impedance,gain and axial ratio of circular polarization are given,which are validated by experimentation.

基于矩量法的分析途径，本文提出了计算矩形腔十字裂缝天线的数值方法，给出天线单元的输入阻抗、增益和轴比等辐射特性的数值结果，并进行了实验验证。

Random boundary ; seismic response of soil layer ; wave impedance ratio

随机边界；土层地震反应；波阻抗比

The more difference of the impedance ratio or velocity ratio, the better wave isolation is.

对於土壤与填充槽沟材质间之相关影响参数来说，土壤与填充槽沟材质间之阻抗比差异越大，对於震波阻隔效果越佳。

A prominent feature of this filter is that the spurious response can be controlled by the impedance ratio K of the resonator, thereby the performance for harmonic suppression is improved.

这种滤波器的特点是其寄生响应可以通过阻抗比K进行控制，因而增进了谐波抑制性能。

The method of moments is used to analyze and calculate the broadband characters of impedance,voltage satanding wave ratio,gain and radiation pattern of larger angle LPDA,and the relation between these characters and the parameter of antenna construction is discussed in this paper.

本文采用矩量法分析和计算了对数周期天线在张角较大时，它的阻抗、电压驻波比、增益及方向图的宽带特性，讨论了这些特性与天线结构参数之间的关系。

Smith chart was used first, an resonator was designed, whose center frequency and impedance ratio are 930MHz and 0.172 respectly.

设计了一中心频率为930MHz，阻抗比为0.172的介质同轴谐振器，其总长度约等于八分之一波长。

Finally, determine reservoir lithology and pore fluid properties. This method requires only small and medium angle seismic data, and all other elastic parameters are from the elastic density ratio and acoustic impedance.

该方法仅需要近、中角度的地震数据，其他弹性属性参数是由弹性密度比与声波阻抗之间的关系通过道运算获得，提高了计算效率，可用于绝大多数采集条件下获得的地震数据叠前反演。

Although impedances of both fresh and frozen-thawed bluntsnout bream decreased as frequencies increasing from 1 kHz to 20 kHz, change ratio of impedance of fresh samples was evidently higher than that of frozen-thawed ones.

结果表明：从1 kHz增大到20 kHz，冰鲜和解冻团头鲂的阻抗均随着频率的增大而减小，冰鲜团头鲂的阻抗相对变化Q值明显大于解冻团头鲂。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了