电磁力

Basing on analysis movement rule of celestial body,the author discuss the cause of earth' s special structure formation and the evolvement law,who cites the theorys of gravitation, electromagnetic force, mightiness and acrotism.

本文在分析天体运动规律的基础上，运用引力、电磁力、强力和弱力等四种基本相互作用力的原理，探讨了地球特殊构造的成因和演化规律。

The study indicated that current and displacement stiffness are constant in the range of allowable engineering error. There is a linear range to the magnetic force. The simplified linear model meets the requirement of controller design. The more precise control precision is, the smaller linear range is.

研究表明，在工程误差允许范围内，位移刚度和电流刚度可视为定值，即此时电磁力方程在应用上存在较大的线性区间，因此简化的线性化模型完全可满足控制器设计的需要，且线性区间随着控制精度提高而减小。

Equivalent convective heat transfer coefficient with considering the air clearance between the water-cooling copper cover and the bottom electrode was calculated and the electromagnetic force equations of the bott.

推导了考虑水冷铜套和电极之间空气隙影响的等效对流换热系数以及通电时的径向和轴向电磁力方程。

The results show that, in the case that workpiece is at rest, the parameters and discharging current of the discharge circuit can be calculated easily and accurately by the preset-frequency method, so the problem of calculating the parameters of discharge circuit can be solved fundamentally.

本文对用园柱加工线圈胀形管坯的电磁成形过程进行了较深入的理论分析和大量的实验研究，重点研究了放电回路的放电过程、加工线圈和毛坯系统中脉冲磁场的磁感应强度及分布和管坯在脉冲电磁力作用下的变形过程。

Then, the centrifugal force will be the electromagnetic force.

那么，这个向心力就只能是由电磁力提供的了。

In the electronic system, a power amplifier which provides magnetic coil with exciting current to produce electromagnetic force is one of the main components. General commercialization of power amplifiers can not meet the application requirements, but should be designed.Power amplifiers are divided into linear amplifier and switching amplifier.

磁悬浮轴承是典型的机电一体化系统，在其电控系统(传感器、控制器和功率放大器)中，功率放大器具有重要的作用，它向电磁铁线圈提供相应的控制电流以产生所需要的电磁力。

The phase EMF vector figure and winding structure of motor are given, and the cause of the radial imbalance electromagnetic force is analyzed base on it.

给出了电动机相电势矢量图及绕组构成，分析了电动机径向不平衡电磁力产生的原因。

In term of these temperature field distributions, we have analysed all kinds of load cases acting on HT-7U vacuum vessel with the help of linear and nonlinear finite element analysis technique.

并且分析了真空室上电磁力产生的机理，给出了真空室在等离子体破裂以及Halo电流形成时真空室上产生的电磁力分布情况及大小。

This article has applied the electromagnetic force is also the attraction, the attraction is also theory of the electromagnetic force explanation fundamental particle gravity and its typical quality disparity.

本文应用了电磁力也是引力，引力也是电磁力之学说的解释基本粒子的重力与其典型质量差距。

Through an analysis of the electromagnetic force on the electric heated rod, the authors work out the equation for calculating the electromagnetic force on unit area of the rod, and indicate that radial vibration of 100Hz will occur when the rod is in operation, which have little effect on the strength and sealing of the rod owing to minor amplitude.

电热杆的交流阻抗远大于导线的电阻，因此主要发热体为抽油杆，可快速有效地加热杆外的原油，而导线不会过热，有利于导线的绝缘与保护。通过对电热杆所受电磁力的分析，推导出了抽油杆内表面单位面积上所受电磁力的计算公式，从而得知电热杆工作时将产生沿径向向外的径向振动，振动频率为100Hz。但由于振幅较小，这种振动不会对抽油杆的强度和密封产生明显的不利影响。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。