线路交换公众数据网络  Circuit-switched Public Data Network

分封交换公众数据网络  packet switching public digital network

公众交换电话网络  public switched telephone network {= PSTN; public switch telephone network

公众交换数据网络  public switched data network {= PSDN

电路交换数据网络  CSAcircuit switched data network

以网络为基础的信息控制  information control based on network

公用电路交换数据网  Circuit Switched Public Data Network CSPDN

公众电话交换网  PSTN

公众交换电话网  PSTN

电路交换的交换局  circuit switching exchange

电路交换式网络  Network; circuit switched

电路交换数据网  circuit switched data network

电路式交换网络  circuit-switched network

数据电话交换数字服务  dataphone switched digital service; DSDS

数据电话交换数字业务  dataphone switched digital service; DSDS

分封交换式数据网络  packet-switched data network (PSDN

以FORTRAN为基础的数组处理机  FORTRAN based array processor

高速公路网络数据和信息  HNDI Highway Network Data and Information

公共程控交换电话网络(PSIN)  beam-slab structure