half-duplex的用法和样例：
词汇搭配
- two way half duplex circuit 双向半双工电路...
- half duplex operation 半双通信,半双工操作...
- speech plus half duplex circuit 话路加半双工报路...
- half duplex channel 半双向通道
- half-duplex operation 半双向操作,半双工运...
- half duplex 半双工,半两用,半双...
- half-duplex service 半双工服务
