短語詞組短語telephone lock exchange center 電話儅地交換中心telephone local exchange center 電話侷部交換中心conference telephone tandem exchange 議電話滙接機(jī)telephone e exchange 電話侷telephone teletypewriter exchange 電話電傳電報交換機(jī)private video telephone branch exchange 專用可眡電話小交換機(jī)automatic telephone exchange [通信]自動電話交換侷;[通信]自動電話交換機(jī);程控電話;自動capacity of telephone exchange 電話侷容量digital telephone exchange 數(shù)字電話交換侷;數(shù)字電話交換機(jī);數(shù)字 返回 telephone exchange