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输入波阻抗
“输入波阻抗”译为未确定词的双语例句
It is notable that manganese dioxide has a great effort to intensify microwave absorption capability of carbon black due to not only its flake and strip shaped microstructure which can increase the reflection and scatter cross section of electromagnetic wave but also its high resistance which can improve the impedance matching of samples. 二氧化锰属于介电损耗介质,特殊的条形片状结构增加了电磁波在机体内的反射次数和散射截面,高电阻特性有效改善了吸波平板材料的输入波阻抗匹配程度,从而大大改善炭黑的微波吸收性能。 短句来源 相似匹配句对
A Study on JFET of High Input Impedance and Low Noise 高输人阻抗低噪声JFET的研究 短句来源 ct. (3) The near and distant effects of the managements in our depatment. (3)输 短句来源 VASCULAR INPUT IMPEDANCE 血管输入阻抗 短句来源 The Impedance Control Method for Robots 机器人的阻抗控制 短句来源 Impedance of Cascade Transformer 串级变压器的阻抗 短句来源 
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Reflection and transmission of a plane electromagnetic wave at a frequency of 2450 MHz at normal incidence on skin-muscle surface are studied by the electromagnetic theory. Our results show that only 43% electromagnetic energy is transmitted into the body tissues,and 57% energy is reflected from the body surface back to the air. But by placing a non-magnetic, insulating dielectric layer ( it's relative permittivity εr = 7.19, thickness d=10.89mm)on the body surface, energy transmission coefficient could be ... 应用电磁场理论探讨了频率为2450MHz的平面电磁波垂直射到皮肤-肌肉组织表面上的反射和透射问题.结果表明,43％的能量透入人体组织,57％反射回空气.若在人体表面上放置一层相对介电常数ε_r=7.19、厚度d=10.89mm、天磁性的绝缘介质,从理论上讲可将能量透射系数提高到99.99％.接着引入输入波阻抗的概念,把理论推广到多层媒质的情况.然后,用此理论研究了平面电磁波垂直射到皮肤-脂肪-肌肉三层人体组织模型上的增透问题.显示,只要给出皮肤和脂肪层的厚度,即可从理论上求出使能量透射系数达到99.99％的增透介质层的厚度和相对介电常数. 文摘来源 The multilayer analysis of solid rotor induction machines based on cylindrical coordinates is performed in this paper.The quadratic power function is adopted for simulating the permeability curve in a ferromagnetic sublayer.The solution of Maxwell field equations is expressed by means of an input wave impedance. Hence the sublayer impedances described by hyperbolic functions are derived. The relationship between the sublayer impedances and electiomagnetic properties of media becomes quite clear.The machine ... 本文研究实心转子感应电机在园柱坐标中的多层分析。文中对铁磁介质子层的磁导率变化用二次幂函数曲线拟合,采取输入波阻抗表达电磁场分析的结果,从而导出用双曲函数描述的分层阻抗,它与介质性能以及子层参数之间的关系相当明朗。算例验证了本分析的计算结果与实验数据良好相符。 文摘来源 A novel absorbing medium of carbon black doped with nanometer sized manganese dioxide were prepared.The microstructure,dielectric constant(ε′,ε″) and microwave absorption property of samples were measured by means of transmission electron microscopy(TEM),transmission/reflection coaxial method from 2GHz to 18GHz and HP 8720B vector network analyzer(VNA).The results show that manganese dioxide belongs to dielectric loss medium with flake and strip shaped while carbon black belongs to erratic current loss medi... 基于单一吸收剂无法达到良好的微波吸收效果,利用纳米二氧化锰掺杂炭黑颗粒制备了一种新型的复合吸收剂,并进行TEM形貌表征,介电性能分析以及微波吸收性能的测试。结果表明,炭黑属于电阻型损耗介质,主要呈球形多孔状;二氧化锰属于介电损耗介质,特殊的条形片状结构增加了电磁波在机体内的反射次数和散射截面,高电阻特性有效改善了吸波平板材料的输入波阻抗匹配程度,从而大大改善炭黑的微波吸收性能。 文摘来源 
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