CSU缩写的意思

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