相对磁导率

在此模型的基础上，用神经网络迭代法从测得的天线温度反演了隐身涂层材料的的相对介电常数、相对磁导率。

Based on the model , retrieves the relative permittivity and relative permeability of the coating - material by iterative inversion of a neural network from the measured antenna temperature .

在完成理论准备后，利用电磁场理论建立了隐身涂层材料的天线温度模型，给出了天线温度与涂层材料的厚度、相对介电常数、相对磁导率之间的定量关系。

The brightness temperature denotes the objects radiation characters . After those models the radiometer antenna temperature of the coating stealth material using the theory of electromagnetic field . This model proposes the quantitative relations among the antenna temperature , material thickness , material relative permittivity and material relative permeability .

所获结果表明：当制备工艺和测试条件相同时，非晶磁粉芯比纳米晶磁粉芯的相对磁导率（μr）高，它们的中心频率都为10MHz。

Obtained results show that when preparing processing and measuring conditions are same , the μ r-value of non-crystal magnetic powder core is higher than nanocrystalline , and their central frequency is 10 MHz .

铁磁性拨叉相对磁导率的变化对高电平触发位置的影响可以忽略不计。

The influence of the fork 's permeability to the high level flip-flops position can be neglected .

借助于此模型，可以确定与扭应力有关的矫顽磁场、剩磁以及相对磁导率等磁性参数的变化。

By means of model , the variation of hysteresis parameter as coercive field , remanent flux density , differential permeability are determined .

随着扫描速度的增加，熔覆层逐渐变薄，气孔和裂纹逐渐减少，熔覆层相对磁导率只有微小的变化。

With the scanning speed increasing , the thick-ness of cladding layer decreased , and the number of pore and crack was also de-creased , however the relative magnetic permeability change little .

考虑气隙中漏磁通，感应磁动势的分布效应，与软磁材料相对磁导率的非线性这几方面的影响，基于分段磁路的方法建立了器件的磁路模型。

We consider the following parameters : gap magnetic flux leakage , the distribution effect of induction potential and the nonlinear permeability for permalloy . Based on the distributed method , the magnetic circuit model is setup .

同时，等温退火处理对各样品相对起始磁导率的影响比改变Cr元素含量x要大得多。

At the same time , the effect of isothermal annealed treatment on the relative initial permeability is much greater than the effect of various contents of Cr element .

而M型六角铁氧体随着BST含量的增加，密度增大，饱和磁化强度、相对复磁导率和磁损耗减小，介电常数和电损耗有所提高。

With the increasing of BST , the density , the relative complex permittivity and the electronic loss increased , and the relative complex permeability decreased .

并测试样品的相对介电常数和相对磁导率，研究了它们的电磁损耗特性。

The electromagnetic loss property was studied by the relative dielectric constant and relative magnetic permeability of the ferrites .

本文研究材料电磁参数（相对复介电常数和相对复磁导率）测试系统的开发。

The development of an electromagnetic parameters ( including relative complex permittivity and complex permeability ) test system was studied in this paper .

结果表明，当磁性媒质的相对复介电常数和相对复磁导率相等时，通过空气与磁性媒质边界的平面波不存在退极化效应。

The research result shows that a planar wave going through a magnetic boundary does not produce the depolarization effect when the relative complex permittivity of the magnetic medium equals its relative complex permeability .