HCN缩写的意思

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