down converted subcarrier

例句：

1. 1. The down-converted subcarrier is used to transmit signals over long distances.
   下变频副载波被用来在长距离上传输信号。
2. 2.In the down-converted subcarrier system, the receiver can receive multiple signals simultaneously.
   在下变频副载波系统中，接收器可以同时接收多个信号。
3. 3.The down-converted subcarrier technique has been widely used in wireless communication systems.
   下变频副载波技术在无线通信系统中得到了广泛应用。