HDG缩写的意思

APPLE TPA FAME ANP CAA IUS AOC CAA AWL MDA AE AAS LCS CCL ADEP NSDA AMC TAS CSA EARL CAR HEAO ECSS GLV ASD Q SC AARS IAS AMA RNC AAS SSC PIA APJ JS SMART ARM AERO MUA AGLT PAA LCFC AVB CSD PAM CMMCA SV AMPS BAAE CPM AAC ARM AN AVW AH SPS EGS ACP ATDRSS