ex缩写的意思

GDP PH TC CHO C OTC DSPS ASS ROH APC AACG IIS STD BWP U.S.P. IECG ACLA PRL ALM ATR NCCLS SGOT APCF NSA N.F. DDC URO CSCO AC Tab ABIC APLL OT IWP INCB ABY SPZ An AEB AACC ECU VM AOSC dm MAS LTP ABE EPI LMA HB AUG ASOM SCM DEXA AO MA PLT/BPC TDA DL PICP