... 闭路通信 closed circuit signalling 闭路通信系统 closed circuit communication system 闭路信号发送 closed circuit signaling ...
2
?闭路通讯系统
... 闭合标题 closed captions 闭路通讯系统closed circuit communication system 闭路通信 closed circuit signaling ...
双语例句
1
Central air conditioner, automatic fire alarm, closedcircuit TV watching system, communication network, public broadcasting and cable TV are all available in the exhibition hall.