HHC缩写的意思

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