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?????11??????????????27? (??????)??????????4?????????????????;??,??????;????,?????????????……?????,????????????????31??????????????,?????,????????“??????”?

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

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

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

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

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