EGR缩写的意思

C&T APN APFTPOS EOC PEFC IAQ IPCC AC AT OHS TS LJ AS FRS P.E.O. AFOC NFAP EI APC SR DC PER PEL AHGOLEOD TPES TSP FCLPRC AR EM RU NFPARR SM CFC ETC ES API ED ESS FFES SE DIL ASBL MPN WBGT UKWAS THC OSUCFM DOW APL PS ARIS MP RORSAT EGR FFCS LOI SBR CASS WWTS ACODS