SD缩写的意思

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