數(shù)據(jù)通信交換(機(jī)) exchange of communications: 交換函電; 通信交換communications and data: 通信與數(shù)據(jù)communications, data: 數(shù)據(jù)通訊data communications: 數(shù)據(jù)通信; 數(shù)據(jù)通訊; 資料通信data exchange: 數(shù)據(jù)交換下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯