??????C919?????????????????ARJ21?

????:?????????:??????

?????6???5?????(???????????)???????????,?????????????????ARJ21??C919???,?,????1??,??????????????????(SAF)?????????,?SAF??????????

??????C919???????????ARJ21????????SAF??,???“??”??????????????????????????????????????????????????,??????????,???????(3??????)??????????????40%,??,?????

????,????????????????,??,?????????“???????????”,?????“??”,???????“??”,??????“??”,??????????????????????“???”(????????????????????)????????

???????????????????,?????,?????,???????????????95%????????????????SAF??????,??????????????????????????????????????????,?????????????????????

????????????,SAF??????????80%???????????????SAF??????????????,????????SAF??,????SAF????,??????SAF?????

(???????????????????????????? ???????????????? ??? ?????????????? ?????????????????? ??????????????????? ???)

??????????????????:??????????