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。
This creates a secondary magnetic field 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。
Through the coils, the secondary device created a magnetic field that can wirelessly charge devices, as long as the two were within several meters.
通过线圈，第二部设备创造了一种磁场，可以实现无线充电，只要两部设备相差在几米之内就行。
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