secure data network system
secure computer network
administration data network
Air Data Computer
直接数字频率合成
直接数字频率合成(DDS)
大气数据计算机
大气资料计算器
Atmosphere Data Computer
B-ISDN Broadband – Integrated Service Data Network
Broad band Integrated Service Data Network (B-ISDN)
Cable Broadband Data Network
Cellular Digital Packet Data Network
central air data computer
circuit switched data network
Circuit Switched Public Data Network
Circuit Switched Public Data Network CSPDN
Circuit-Switched Data Network(CSDN)
Circuit-switched Public Data Network
Circuit-Switched Public Data Network CSPDN