磁导率

A measure of the effect of the medium on the magnetic field B when subject to a magnetizing force H: B = 0 in SI system, B = H + 4πI in cgs system, where 0 is the permeability of free space.

是介质在磁场 B 中所受磁化力为 H 时产生的效应：在国际单位制中 B = 0 在厘米-克-秒制中 B = H + 4πI 其中 0 为自由空间磁导率。

Based on the Maxwell Equation, theoretical formula of microwave permeability and permittivity of polycrystalline iron fibers are introduced.

基于麦克斯韦方程，给出了多晶铁纤维的微波磁导率和介电常数的理论公式。

The complex relative permittivity and permeability of the absorber were measured in a frequency range of 2 to 18GHz.

HP8722ES矢量网络分析仪测量了样品在2~18GHz频率范围内的复介电常数和复磁导率。

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。

Relative permittivity coefficient approaching 2 000 and relative permeability coefficient more than 1.4 are calculated respectively.

推算出脉冲形成线的相对介电常数接近2 000，相对磁导率大于1.4。

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。

The results show that MnO2 powders have a self-grown core-shell structure with diameters of 3～5 μm, the real and the imaginary part of the complex relative permittivity are 8.40～5.35 and 2.66～2.07, respectively, whereas the real and imaginary part of the complex permeability are as small as 1.04～1.14 and 0.03～0.21, respectively.

结果表明：所制得粉体是直径3～5 μm的核壳结构海胆球形MnO2，其复介电常数实部在8.40～5.35，虚部在2.66～2.07；复磁导率实部和虚部都很小，分别在1.04～1.14和0.03～0.21范围内。

Having investigated composites of EP coating ultramicro iron using ATPU as surface agent, results showed that with increasing amount of ATPU, density , complex permittivity and complex permeability of composites decreased, and retentivity and coercivity increased.ε"μ"

用ATPU作表面活性剂制备核壳结构复合粒子时，随着复合时ATPU用量的增加，复合粒子的密度、复介电常数和复磁导率逐渐减小，剩磁与矫顽力逐渐增大。

The average coupling coefficient was put forward,which is the average of every single secondary coil's coefficient.

重点研究了平均耦合系数与磁芯纵横比、半径比、初级绕组-磁芯长度比、磁芯材料磁导率的相对变化关系。

The metal magnetic material was adopted to satisfy EMI resistance equipment in GHz frequency, due to its higher saturation magnetic susceptibility than the ferrite material, lamella structure and higher frequency in Snoek limit than that of the ferrite material.

由于金属磁性材料的饱和磁感应强度高过于铁氧体，微波段的磁导率高，有利于实现薄层化， Snoek极限值所到达的频率高过于铁氧体材料，所以可以采用金属磁性材料来满足GHz频段抗干扰器件的要求。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。