Analyse principle of operation, technology feature of single-phase alternatingcurrent induced liquid metal electromagnetic pump wave soldering machine.
重点分析单相交流感应式液态金属电磁泵波峰焊接设备技术的工作原理、技术特征；
2
The control effect of electromagnetic force on cylinder wake, lift force and drag force , which was caused by alternatingcurrent, 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。
3
The design is adapted for manufacturing various alternatingcurrent-direct current electromagnetic relays.