... duplex telephone wire 双工电话线 duplex telephone 双工电话 duplex telephony 双工电话学 ...
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full duplex telephone lines 全双工电话线
duplex telephone wire [通信] 双工电话线
two wire duplex telephone 二线双工电话
duplex radio telephone set 双工无线电话机 ; 双工无线
duplex radio telephone 双工无线电话机
computer-controlled duplex UHF mobile telephone 计算机控制超高频双工移动式电话机
Unfortunately, limited by the characteristic of real telephone channels, it has not completely solved the full-duplex difficulty problem up to now.
不幸的是，由于受实际电话信道特性的影响，该技术至今尚未完全解决这一全双工难题。
The echo cancellation technique is now widely used to implement the full-duplex communication in almost all telephone privacy systems.
几乎所有的电话保密系统都使用回波抵消技术来实现全双工通信。
Between the center and the devices, the duplex communication links are created through the public switched telephone network, thus the remote management for the devices is realized.
集中管理中心与集中管理式电话计费器之间可通过公众电话网以拨号方式建立双向通信链路，从而实现对集中管理式电话计费器的远程管理。
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