low-frequency amplification stage

例句：

1. 1. The low-frequency amplification stage is crucial for the signal processing.
   低频放大阶段对于信号处理至关重要。
2. 2. The engineer used a low-frequency amplification stage to improve the quality of the audio.
   工程师使用低频放大阶段来提高音频的质量。
3. 3. During the low-frequency amplification stage, the signal is amplified and filtered to enhance its clarity.
   在低频放大阶段，信号被放大和过滤以增强其清晰度。