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。
2
The wholw machine is driven by compressed air and air cylinder is controlled by electromagnetic valve by finishing multiple functions.
设备动力用压缩空气，执行元件用电磁阀控制气缸以完成多项功能；
3
General pneumatic electromagnetic guide, the process of performing actions cylinder can also be manually controlled pilot valve cylinder process of the implementation of the action.