电磁

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。

Fe-Zr-B amorphous alloy is an important soft-magnetic material, which has important applications in preparation of transformer, magnetic recorder, electromagnetism disturbing shield and so on.

Fe-Zr-B 非晶合金是一种良好的软磁性材料，在变压器设备、磁性记录材料、电磁干扰屏蔽材料等领域有着重要的应用。

And 0.4～0.6 respectively for the induction coil with round crosssection and rectangular cross-section; The magnetic flux density of coil made with round pipe was nonuniform, especially near the inner wall of coil turns that caused a fluctuation of electromagnetic pressure on the surface of liquid metal and had a bad effect for forming a sample with uniform cross-section and smooth surface; The system of screen and restraint magnetic field not only had an efficient effect on restraining the electromagnetic stirring and stablizing meniscus, also caused the conecial periphery of melt to be vertical; The position of top and S/L interface of melt had a direct effect on the meniscus shape. The meniscus profile varied from cone-shaped through column to cucurbituceous shape with the increase of top height or decrease of S/L interface.

对圆形截面、矩形截面感应圈来说D/H分别取0.7～1.1，0.4～0.6较为理想；对多匝感应圈来说，在匝间处存在漏磁，易引起熔体表面起伏不平，这种现象在用圆铜管绕制的感应圈中较为明显；屏蔽—抑流系统的加入可以消除电磁搅拌，使熔体稳定性增强，同时可使形态呈锥形的熔体侧面变得垂直成为理想形态；熔体上液面、固/液界面的选位直接影响成型形态，上液面升高，熔体形态经历锥形→柱形→葫芦形的转化，固/液界面下降则经历锥形→葫芦形的转变。

Magnetic shield is the difficulty of electromagnetic shield.

磁场屏蔽是电磁屏蔽中的难点。

Therefore, the accurate computation of the torque and magnetic levitation force is the basis for the design and control of PMBLM.

电磁转矩和磁悬浮力的精确计算是无轴承电机设计及其控制的基础。

In addition, from the study of motor model we can get the variable statuses of voltage, current and magnetic torque with the time change.

而且通过电机模型可以得到电压、电流以及电磁转矩随时间变化的情况。

Based on the analysis of calculation theories on magnetic field and torque of permanent magnetic gears, the characteristic curve of torque-angle are calculated with the use of Ansoft electromagnetic calculation software.

本文在分析永磁齿轮磁场和转矩计算理论的基础上，利用Ansoft 电磁计算软件计算了平行轴永磁齿轮的矩角特性曲线，并研究了恒定负载下永磁齿轮的转速波动情况。

The application of AMB is high technology which concerning many fields such as magnetics , mechanics, rotor dynamics , control theory and computer science.

电磁轴承的应用是一种高新技术，涉及到电磁学、机械学、转子动力学、控制理论和计算机科学等众多领域。

The phenomenon of hysteresis has been the focus in the area of magnetics,thestudy of it has a very important meaning not only in magnetic materials and magneticrecording process,but also in the analysis of performance and optimization design ofelectromagnetic devices and control devices.

磁滞问题的研究一直是磁学领域研究的一个重点内容，该问题的研究不仅在磁记录领域有着重要的意义，在电磁设备、自动控制设备的行为分析及优化设计方面也有广泛的意义。

We think of magnetism as a molecular phenomenon .

我们认为电磁是一种分子现象。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。