modulation ratio

例句：

1. 1. The modulation ratio of the signal is crucial for accurate communication.
   信号的调制比对于准确的通信至关重要。
2. 2. In radio engineering, the modulation ratio determines the quality of the audio signal.
   在无线电工程中，调制比决定了音频信号的质量。
3. 3. The engineer carefully adjusted the modulation ratio to optimize the system performance.
   工程师仔细调整了调制比以优化系统性能。