duplexer

例句：

1. 1. The duplexer is used to convert two signals into one.
   双工器用于将两个信号转换为一个。
2. 2.The duplexer allows for simultaneous communication between two parties.
   双工器允许双方同时通信。
3. 3. The duplexer was designed to improve the quality of audio signals.
   双工器被设计用来提高音频信号的质量。