An induction loop is used to power the device and to relay data from the lens to a receiver worn by the patient.
感应圈被用于启动该装置，并用于将镜片里的数据传输到患者配戴的接收器上。
2
China's mines are hoist AC Induction Motor Drive, and its electrical control system uses a rotor series, cutting speed resistance , by the relay - contactor control devices constitute a logical.