EC缩写的意思

SE CAE SDA CAP CLE IEEE-CS CAT INDA CGRM CDI GAPP CAE CAP SGU CEM PD PCC CMC ETX ICS AAS VCL ICP OBC CMC SDS ACS ASPC CEL CENSA PCMCIA CSD CTF IPLI CAMPER ECS AST SWI CAD ICS CSTNET ACC TMCC GPDC CADD CAT CSTS IMAP SA&SD EIA CARE NPC CBG CDS CSD BOB PCCG CAPP CPL NU