全自动交换网络
full automatic switching network
信息自动交换网络
automatic message switching network
自动交换网络
automatic switching network
自动交换网
automatic switch net-work
HF全自动网络
automated HF radio networks
半自动交换抬
semi-automatic (telephone) switch-board
不值管自动交换
unattended automatic exchange
长途电话自动交换机
automatic toll switching system
程控数字自动交换机
PABX:PrivateAuntomaticBranchExchange
电报-电话自动交换
automatic switching of telegraph and telephone
电报自动交换系统
telegraph automatic switching system
电传打字机自动交换设备
automatic teletypewriter switching equipment
电子多重自动交换
electronic multiple automatic exchange
emax