????:2024-09-23 19:46:29 ??:????
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??????????????????????????,???,?????????????????????????????????????????????????????2012??????????54????2023???????126??,??????????????????6.1%,???30%????????????????,???,????????????,?????????5%??,????????????
??????????????????,???,???????1.91%?????????2.64%,?????????34???????????????12???????????????????????????,?????????????,??C919???,“??????????”????,???????????????,?????,???????????????5G????????????????
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????????,?????????????????????????,?????????????????????????????????????????????,????????????????????????????????????????????????????????????????????,???,??????????53.1%????66.16%?????,???????
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????????????????,??????,?????????????????????,2013??????????1300???????????????????,?????698?,???5.1%??????????????,????????????????2.88?????????????????2.39??????,“???”???????????????????????????????????????????,???????,??????????
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