amplifier detector

例句：

1. 1. The amplifier detector is used to detect the presence of electronic devices in the room.
   放大器检测器用于检测房间内电子设备的存在。
2. 2. The amplifier detector was designed to improve the accuracy of audio signals.
   放大器检测器被设计用来提高音频信号的准确性。
3. 3. The amplifier detector was used to detect the presence of illegal drugs in the laboratory.
   放大器检测器被用来检测实验室里非法药物的存在。