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

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

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

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

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

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

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

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

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