?????????2??13??????? (? ??)???(????????)??????????13????????????,±800??????????????????????????????,??

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2???????????????????12??????,?,?±800?????????????????????????????? ?

±800??????????????????,???2020????????????????????????????????6???30???????????????????????,??????????????????????????5??,??????????????700???????????????????????????????

????±200?±400?±600?±800??????????????????????????????,???????6??1???????????????????1????±200?????????

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?,????????,???2000?????????????????,????????????

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