????:1?????????:????

2???????

3?????200??500???

4???????

5??????????????

??????????????1+1?????????????CR450 ???

???????????,?????????CR450?????????????????????,??????????????450???????,???400????,????????????????????????????????????????????????????????,????CR450?????????????????????????????«????????????1+1»?????,????????

??“CR450”,C??????????????China,R??Railway,???,??????????350?????????????????,???????,???????50????????????,??,??,???????,??????

CR450?????????????

?????????????

?????? ??????????????????:CR450?????,???????????????????????????????,??200?????????200?????????,????????????????????????????????????????,??????60?????????CR450??,???????????????,??,????????????????????????????????????????????????,????????????,?????????

50??????

????????

?????????????????? ?????:?????????????2018??,????????,????????,???????

????????????????????????????????????????????,????????????,???????,???,?????????

50????,???????,???????,????????,??????,????????????????????????

????,???,?????????????CR450???????????,????????22%?

??????????

?????????????? ???:?????????????????????,????,???????????????,?????????????,???????????????,???????????????????,?????????,??CR450??????????????400???????,??????????????????????,??????????

(?????????????) ??????????:?????????