名词
中文翻译：Unknown
同义词：
['- duplex telephone line']
例句：
-
1. Thecompany offers a duplex line service thatallows for simultaneous voice anddata communication.
该公司提供双线服务，允许同时进行语音和数据通信。
-
2. The newphone system features a duplex line thatcan support up to 100users simultaneously.
新电话系统具备双线功能，可同时支持多达100名用户。
-
3. In the event of a poweroutage, the duplex line willautomatically switch to backup power sources.
在电力中断的情况下，双线会自动切换到备用电源。