In the process of measuring radio frequency absorb material by vector network analyzer, the impedance of rectanglecoaxial measuring device is mismatched and cause redundant reflection.
在使用矢量网络分析仪对射频吸波材料进行测试的过程中，由于矩形同轴装置阻抗不匹配，将引起不希望有的反射。
The crystal structure and electrochemical performance of the material were studied by XRD, cyclic voltammetry, electrochemical impedance spectroscopy (EIS) and galvanostatic charge-discharge tests.
用XRD、循环伏安、电化学阻抗谱(EIS)、恒流充放电测试研究了材料的晶体结构和电化学性能。
Through complex impedance spectra, SEM, XRD etc. tests, it was proved that the microstructure and PTC properties of the material were improved.
经复阻抗谱、SEM及XRD等测试分析表明，材料的微观结构得到了明显改善，PTC性能得以提高。
The above data could be used to analyze the impedance and temperature mismatching levels between the non-transparent sample material being studied and the window material as a partly data base.
上述数据可供用它作测量不透明材料冲击温度窗口材料时进行阻抗失配和温度失配分析时的依据。
An analytic expression for the radar cross-section of an impedance cylinder coated with composite and anisotropic. chiral material is obtained by application of boundary conditions.
然后根据边界条件得出计算所讨论的阻抗圆柱体的雷达散射截面的解析表达式。
Impedance matching law is a key problem in the development of electromagnetic absorbing material.
该匹配条件简单明晰，它对于研制高水平的电磁吸波材料具有重要的指导作用。
Piezoelectric impedance technology which is based on smart material is a brand-new method for structural damage detection, and it could be widely applied in structure health monitoring field.
压电阻抗技术是一种基于智能材料的结构损伤检测新技术，在结构健康监测领域有着广泛的应用前景。
When the as-formed mullite ceramic is used as an impedance transfer layer of the microwave absorbing material, it greatly enhances the microwave absorbing efficiency of absorbing materials.
将莫来石陶瓷作为吸波材料阻抗变换层，能够大幅度提高材料的吸波性能。
But it is a kind of soft material. Both wave velocity and wave impedance are very low. So experimental study of its dynamic mechanical behaviors is difficult.
但由于它是一种柔性材料，波速和波阻抗均极低，因此实验研究其动态力学性能具有很大困难。
A filter media for an active field polarized media air cleaner comprises two layers of dielectric material, and a high-impedance permeable net is sandwiched in the low-impedance dielectric layer.
一种用于有效场极化介质空气净化器的过滤介质，包括两层介电材料，并且在低阻抗的该介电层之间夹设有高阻抗的透气网。
I think the impedance of a headphone is related to the driver design. The power requirement is more related to the use of material in the driver.
假设低阻不等如大食，我们又如何可知耳机需要多大力量去发挥呢？
I think the impedance of a headphone is related to the driver design. The power requirement is more related to the use of material in the driver.
假设低阻不等如大食，我们又如何可知耳机需要多大力量去发挥呢？
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