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????:??2020????:??????QQ?

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??????,???????2006???,??????2??????????,??GSM-R?????????????????????,???????“??????”,??????“???????????”?

??????????,?????,??????????,??,??????????,????????????????????????,???????????GSM-R???????????????

??????,????“?????????????”????,?????????????2011??????????????????,???????????,??????(???????????)?????,???????

???????????????????,????,??,?????????2012??????,??????“????”“???????????”????

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??????????31?????????,???????????????????????????????????????????????????????????????,2023?,??????????????,???????????????(????)

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