美国生活科学网报道说，通常无线输电设备至少包含两个线圈，一个在功率发射器中，一个在功率接收器中。
The average Wireless power Transfer gadget consist of at least two coils, one located in the power transmitter and the other in the power receiver, reports LiveScience.
当电流穿过功率发射器中的线圈时会产生电磁场，向接收器输送电量。
As electricity moves through the power transmitter coil, it creates an electromagnetic field that sends a charge to the next coil.
所述充电接收器包括一个第二线圈，所述第二线圈与所述第一线圈耦合。
The charging receiver comprises a second coil. The second coil is coupled with the first coil.
所述充电接收器包括一个第二线圈，所述第二线圈与所述第一线圈耦合。
The charging receiver comprises a second coil. The second coil is coupled with the first coil.
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