AT缩写的意思

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