In electronics, pertaining to a material such as iron or nickel that has a very high magnetic permeability. 电子技术中,修饰说明诸如铁、镍一类具有很高磁导率的材料。
With the calculation and measuring experiment methods, the effect of vacuum chamber materials magnetic permeability on field distribution in a dipole magnet is discussed. 通过计算机模拟计算与实验相结合,讨论了真空盒磁导率对二极磁铁磁场分布的影响。
Magnetic inductivity: Magnetic permeability; the three-dimensional inductance of a material. 感应率:磁导率;物质的三维感应系数。
X-ray diffraction method and magnetic permeability method have their own application scopes and limitations. 射线衍射法和磁性法均有其局限性。
In this paper, a new method for measuring the microstructure of malleable iron by employing the magnetic permeability is put forward. 提出利用材料的磁导率检测可锻铸铁金相组织及硬度的新方法。
The refractive index of a substance is determined by two properties known as the electrical permittivity and the magnetic permeability. 物质的折射率由两项性质决定,分别是介电常数和磁导率。
The electromagnetic loss property was studied by the relative dielectric constant and relative magnetic permeability of the ferrites. 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。
For TE modes, the changes of dielectric constant and magnetic permeability of tunnel have little effect on that of the attenuation rate; for TM modes, the dielectric constant or magnetic permeability of tunnel is bigger, the attenuation rate is higher. 对于TE波模,隧道的介电常数和磁导率的变化对电磁波衰减率变化的影响不大,对于TM波模,隧道的介电常数或磁导率越大,电磁波衰减率越大。
The Varying Regularity of Magnetic Permeability and Dielectric Constant of Mixed Magnetic-Dielectric Materials 混合磁性&介电材料的磁导率和介电常数的变化规律
The appropriate coil structure parameters were presented, and an optimized design scheme was proposed in which pure iron with high magnetic permeability was attached to both ends of the giant magnetostrictive material ( GMM) to reduce loss. 给出了合理的线圈结构参数,提出了在超磁致伸缩材料(GMM)棒两端安装高磁导率的软磁体和减少GMM棒涡流损耗的设计方案,并忽略了气隙的影响。
Based on the relationship between the magnetization force of substance in a gradient magnetic field and its magnetic permeability, a method to detect phase transformation of metal by means of measuring the force was proposed. 根据物质在梯度磁场中的受力与其磁性相关的原理,提出了通过测定合金在磁场中的受力来了解其相变的方法。
Distinguishing magnetizing inrush currents from internal faults can be effectively fulfilled by using the criterion of an instantaneous excitation inductance and an equivalent instantaneous inductance, which is based on the difference of the magnetic permeability in iron core of transformer between inrush currents and internal fault. 基于变压器铁心磁导率在励磁涌流与内部故障时变化情况的不同,应用瞬时励磁电感和等效瞬时电感的概念,可有效判别变压器励磁涌流。
Assumed dielectric constant and magnetic permeability were introduced to realize the non-reflectively absorbing, which avoids the split of wave components in normal Berenger PML. 在边界部分引入假象的介电常数和磁导率,实现了边界的无反射吸收,避免了Berenger完全匹配层中场分裂过程,提高了计算效率。
The Method Measured and Studied of Pulse Magnetic Permeability 脉冲磁导率的测量方法与研究
By using the larger magnetic permeability, magnetic fluid was used to improve the magnetic circuit efficiency in torque motor, enlarge the output torque and displacement of torque motor, and the output flow of servo valve. 由于磁流体具有较大的导磁率,可提高力矩马达磁路效率、增大力矩马达的输出力矩和位移,从而增加伺服阀的输出流量;
Especially the unlinear relation between the degree of hardness of aluminium and initial magnetic permeability, these all affected the testing of the metal hardness seriously. 特别是金属硬度与初始磁导率的非线性问题,这些均严重影响了硬度的检测。
Left-handed materials, of which the dielectric constant ε and the magnetic permeability μ are simultaneously negative. 左手材料是指一种介电常数ε和磁导率μ同时为负值的材料。
The effects of magnetic permeability), dielectric constant), electrical conductivity(σ) and thickness ( d) of composite, parameter combination and layer arrangement order of multilayer film on the microwave reflectivity have been discussed through the calculation of reflectivity. 通过计算,讨论了介质的导磁率()、介电常数()、电导率(σ)、介质厚度(d),多层介质的参数组合以及各层的排列次序对微波反射率的影响。
It was found that the volatilization of Li in the sintering process was diminished by lowering sintering temperature, and substitution of Li by Zn can increase initial magnetic permeability and by Co can increase cut off frequency. 发现材料实现低烧的同时也有效地克服了烧结过程中的Li挥发,用Zn和Co部分地替代Li可有效地提高材料的起始磁导率和截止频率。
The magnetic location is using the magnetic permeability of human body very close to that of the air. 磁定位原理是利用人体的磁导率非常接近空气的磁导率,人体对永磁体磁场的分布基本没有影响。
Our results show that the beam nonlinear propagation and beam self-focusing and self-defocusing in left-handed media can be strongly tuned by the convergence/ divergence of the incident beam and the magnetic permeability of left-handed media. 结果表明,入射光束的会聚特性和左手介质的磁导率对自聚焦和自散焦等非线性过程有很强的调控作用。
On the basic of its properties, the material has the properties of conductivity, magnetic permeability, impact resistance, high temperature antioxidation capacity and electrocatalysis due to surface metallization. 在材料本身性能的基础上,通过金属化技术使其具有导电导磁、耐冲击力、抗高温氧化及电催化等性能。
In reference to de-embedding method, formulas are deduced to calculate S parameters of material itself, and a program is developed to compute the dielectric permittivity and magnetic permeability. Shielding mechanism of the nano-composites is thoroughly analyzed by comparing experiment data and simulation curves. 根据去嵌入法推导公式计算出材料本身S参数,并编程计算出三种吸波材料的介电常数与磁导率,通过对比实验数据及仿真曲线,对各材料的吸波机理进行深入的分析。
By a hydrothermal synthesis and hydrogen reduction method, high magnetic permeability of the sheet a-Fe particles was prepared. In order to get enhanced microwave absorption by increase the permeability of the material to increase the magnetic loss. 第一部分从提高磁损耗的途径出发,利用水热-氢气还原的方法制备高磁导率的片状α-Fe颗粒,试图通过提高材料的磁导率来增大磁损耗达到增强微波吸收的目的。
There the dielectric function and magnetic permeability are defined by the modifications of the in-medium fields from their vacuum values. 介电函数和磁导率定义为介质中电场和磁场相对于真空中的变化。
In addition, special attention is paied to the general features of instability induced by arbitrary high-order nonlinear dispersion effects originating from the combination of dispersive magnetic permeability and nonlinear polarization. 此外,本文得到了色散磁导率所导致的任意高阶非线性色散对不稳定性的影响的一般性规律。
On the basis of simulation analysis of the finite element, a rotor abrader having strong magnetic permeability and grinding performance has been designed in this paper. 本文在有限元仿真分析的基础上,设计了一套既具有较大导磁性又具有很强磨削能力的转子磨具。
The transformations of the magnetic properties of ferromagnetic materials ( Magnetic Permeability and Coercive Force) under applied stress and plastic deformation are obtained by calculating. 计算了铁磁材料磁学属性(磁导率和矫顽力),随应力和塑性变形的变化。
The results of the experiments show that only by increasing the permeability of the material without impedance matching problem is difficult to make waves into the absorber, and the material with high magnetic permeability will not increase the microwave absorption properties. 实验结果表明,仅仅通过提高材料的磁导率而不注重材料的阻抗匹配问题,很难使电磁波进入到吸波体中,材料的微波吸收性能不会提高。
The left-handed material is a kind of artificial composite material. Owing to the negative dielectric permittivity ε and the negative magnetic permeability μ in some frequency range, to compare with the normal material, it has many unusual electromagnetic properties. 左手材料是一种人工复合材料,由于对于某些频段入射的电磁波具有负的介电常数ε和磁导率μ,同正常材料相比具有很多不寻常电磁特性,有极大的应用范围。