短語詞組短語private branch exchange switchboard 內(nèi)部通信小交換機(jī);專用小交換機(jī)branch h type switchboard 分立型配電磐private branch switchboard detail 專用交換臺(tái)private branch switchboard 專用交換臺(tái);用戶交換臺(tái);用戶縂機(jī)The Branch Switchboard 主乾交換機(jī) 返回 branch switchboard