cos缩写的意思

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