LL缩写的意思

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