half-wave detector

例句：

1. 1. The half-wave detector is used to detect the presence of a signal in a circuit.
   半波检测器用于检测电路中信号的存在。
2. 2. The half-wave detector is sensitive to changes in temperature and pressure.
   半波检测器对温度和压力的变化很敏感。
3. 3. The half-wave detector was designed to improve the accuracy of the electronic circuit.
   半波检测器被设计用来提高电子电路的准确性。