DDF缩写的意思

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