SD缩写的意思

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