EM缩写的意思

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