preamplifier stage

例句：

1. 1.The preamplifier stage is responsible for amplifying the input signal.
   前置放大器级负责放大输入信号。
2. 2. In this circuit, the preamplifier stage is designed to enhance the signal-to-noise ratio.
   在这个电路中，前置放大器级被设计来提高信号与噪声的比值。
3. 3.The preamplifier stage is crucial for maintaining the stability of the overall system.
   前置放大器级对于保持整个系统的稳定性至关重要。