DF缩写的意思

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