DDR缩写的意思

GPS EFCI UMTS FCN ABDL DVC Bps IS-IS GIMM APADAS EF ETE CAI CTDM NDS CSE CC DFSK SSM ESC SSG DTP DFOS IOB CPM QDOS EELS AP CRC RAID MADP ASC SFB DCT DCN DTD GDPS CICS IM DL RIP DPON STB ppm DVVI APARS CPS CNCC FED EEROM EAF mcu AJG EWT NCBA DS SOC S3 AFC ASI