PPA缩写的意思

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