DDL缩写的意思

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