DDCS
= Data Definition Control System,數(shù)據(jù)定義控制系統(tǒng); = Digital Data Calibration System, 數(shù)字?jǐn)?shù)據(jù)標(biāo)定系統(tǒng); = Digital Data Circuit Service, 數(shù)字?jǐn)?shù)據(jù)電路業(yè)務(wù); = Digital Data Communications Set, 數(shù)字?jǐn)?shù)據(jù)通信設(shè)備