A transmitter coil, 26cm in diameter, can beam up to 15 watts of power to a receivercoil just 4.3cm across.
一个直径26厘米的发射线圈能够无线传输给接收线圈15瓦的功率，传输距离为4.3厘米。
2
In basic terms, the system has power lines connected to coils under the surface of a road, which then transmit the electricity through the air to a receivercoil in a car.
简单地讲，这个系统将输电线和路面下的线圈相连接，通过空气将电能传输给汽车里面的接收线圈。
3
The receiver pad coils are magnetically coupled to the primary power coil.