bandpass amplification

例句：

1. 1.The bandpass amplifier was designed to improve the signal-to-noise ratio in this frequency range.
   带通放大器被设计来提高这一频率范围内信号与噪声的比值。
2. 2. In digital communication, bandpass filters are used to remove interference from other frequencies.
   在数字通信中，带通滤波器用于去除其他频率的干扰。
3. 3. The engineer used a bandpass amplifier to boost the weak signal coming from the sensor.
   工程师使用带通放大器来增强从传感器传来的微弱信号。