stereophonic subcarrier

例句：

1. 1.This device is capable of transmitting stereophonic subcarrier signals.
   该设备能够传输立体声副载波信号。
2. 2.The stereophonic subcarrier was used to enhance the audio quality.
   立体声副载波被用来提高音频质量。
3. 3. The stereophonic subcarrier was crucial for the successful transmission of the signal.
   立体声副载波对于信号的成功传输至关重要。