double circuit receiver

例句：

1. 1. The double circuit receiver is used to receive signals from both directions.
   双路电路接收器用于接收来自两个方向的信号。
2. 2. In the old days, this type of receiver was commonly used in radios.
   在旧时代，这种接收器常用于收音机中。
3. 3. The new model of the double circuit receiver has a better signal reception capability.
   新款双路电路接收器有更好的信号接收能力。