GBR缩写的意思

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