PP缩写的意思

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