The deforming force of cone-die direct extrusion is solved by a mathematic method based on the simplified flow model of slip line field.
基于滑移线场的简化流动模型，运用数学方法求解出了一种锥形模正挤压变形力的最佳上限解，并将该上限解用通用解析式表达出来。
Traveling-wave interaction and secondary magnetic field is generated electromagnetic force, which is a straight line to run the basic principles of electric motors.
行波磁场与次级相互作用便产生电磁推力，这就是直线电动机运行的基本原理。
Power wire in a magnetic field direction of movement of the force and the magnetic sense of direction with the current line (magnetic field) direction related.
通电导线在磁场中受力运动的方向跟电流方向和磁感线(磁场方向)方向有关。
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