电磁力

Therefore, the centripetal force can only be supplied by can electromagnetic force.

那麽，这个向心力就只能是由电磁力提供的了。

The physical properties include density, thermal capacity, resistance ratio, thermal conduction coefficient and viscosity of liquid steel.

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。

Two coils move the piston back and forth magnetically at a constant force.

两组线圈在一个连续电磁力的作用下来回移动一个微型活塞。

Continuous casting experiments results show that in the mold oscillation coupled with AMMF EMCC, imposition of AMMF duty part during mold oscillation positive strip can deduce the withdraw resistance and improve the billets surface.

论文的第三部分，基于以上的一些研究，提出了又一项新的技术——调幅磁场下无结晶器振动电磁连铸技术，以期用结晶器外调幅磁场电磁力的振动来取代庞大的机械振动系统。

Then we derived the expression of electromagnetic force in the electromagnetic crystallizer in the cylindrical coordinates.

进而推导出在柱坐标系中，电磁结晶器内电磁力的表达式。

After analyzing the magnetic field distribution of arbitrary shape coil, we study the distribution of analytical model of traveling magnetic field, rotating magnetic field and electromagnetic force in difference case in the electromagnetic crystallizer.

2在分析任意形状线圈的磁场分布基础上，在电磁结晶器内，研究了不同情况下行波磁场和旋转磁场及其电磁力的分布解析模型。

The results show that, when the electromagnetic field was applicated, the flowability and filling capacity of cupronickel alloy are increased, the surface cracks are eliminated, and the thin-walled cupronickel tube billets with smooth surface can be obtained due to the increase of flowability and filling capacity of cupronickel alloy. The solidification structure of the tube billets is evidently refined, the shape of Ni-rich phase changes from needle-like to bulk and the casting stress declines from 7.2 to 0.32 MPa. With the structure improving, the tensile strength and elongation increase by 5% and 36%, respectively, than those of ordinary continuously cast tube billets.

结果表明：在连铸过程中施加旋转电磁场能够提高金属液的流动性和充型能力，消除表面裂纹缺陷，从而制备出表面光滑的薄壁白铜管坯；在电磁力的作用下管坯凝固组织显著细化，富镍相由针状转化为团块状，同时铸造应力由未施加电磁场时的7.2 MPa下降至0.32 MPa；随着凝固组织的改善，施加磁场的管坯抗拉强度和伸长率与未施加磁场管坯的相比分别提高5%和36%。

Theoretic analysis as well as experimental data indicates that the even dispersion of Ni in Ag matrix increases the viscosity of melting liquid, which impedes favorably splashing of fused mass.

理论分析和实验数据表明，细小的Ni在银基体内的均匀分布提高了熔融体的粘度，有利于阻止电磁力作用下液体的飞溅，提高了触头的抗电弧侵蚀能力。

However, the effect of electromagnetic force is stronger than that of the plasma drag force in helium arc.

在氩弧下，影响熔池形貌的另一个重要的驱动力是气体剪切力，而氦弧下则是电磁力。

The control effect of electromagnetic force on cylinder wake, lift force and drag force, which was caused by alternating current, is related to its frequency.

而交流电所产生的电磁力对于绕流涡街、升力、阻力的控制作用，则与所使用的频率有关。

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。