duplex coil

例句：

1. 1.The device uses a duplex coil to detect the presence of an object.
   该设备使用一个双联线圈来检测物体的存在。
2. 2.The duplex coil is responsible for transmitting and receiving signals.
   双联线圈负责发送和接收信号。
3. 3. The duplex coil is crucial for maintaining the stability of the system.
   双联线圈对于保持系统的稳定性至关重要。