HEC缩写的意思

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