multifrequency receiver

例句：

1. 1. This device is designed to receive signals from multiple frequencies.
   这个设备设计用来从多个频率接收信号。
2. 2. The multi-frequency receiver can detect the presence of a target signal even in noisy environments.
   多频接收器可以在噪声环境中检测到目标信号的存在。
3. 3. The multi-frequency receiver was used to monitor the transmissions from the satellite.
   多频接收器被用来监测来自卫星的传输。