Traveling-wave interaction and secondarymagneticfield 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。
2
This creates a secondarymagneticfield around the cans that is repelled by the magnetic field of the rotor, literally ejecting the aluminium cans from the other waste materials.
这样，被转子磁场隔开的铝罐周围就会产生一个二级磁场，实际上也就能将铝罐与其它废料隔离开来。
3
Through the coils, the secondary device created a magneticfield that can wirelessly charge devices, as long as the two were within several meters.