lower side-band characteristic

例句：

1. 1. The lower side-band characteristic of the radar system is crucial for its performance.
   雷达系统的低频边带特性对其性能至关重要。
2. 2. The lower side-band characteristic of the communication system can be used to enhance signal quality.
   通信系统的低频边带特性可以用来提高信号质量。
3. 3. The lower side-band characteristic of the audio signal is important for sound quality.
   音频信号的低频边带特性对于音质很重要。