电路交换公共数据网
Circuit-Switched Public Data Network CSPDN
公共电话交换网
PSTN Public switched telephone network
public switched telephone network
PSTN
公共电话网
PSTN
public switched tele-phone network
公共交换电话网
public switched telephone networks
PSTN
公共交换电话网路
PSTN
public switched telephone network
CGI公共网关接口
CGI Common gateway interface
电网公司
power company
electricity grid company
grid company
grid companies
power network corporation
power grid corporation
power generation company
power grid company
electric grid company