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2025-01-20 17:03:21 73449

????1??20????????? ???,????????,???????????????«???????????????»(GB16171.1-2024),????????????????2012??????«?????????????????»(GB 161712012),????????????,??,???

?,?????????????,2023???????????????????????4.9???????????????,????????????????????70%????????????????????????,?????????????????????????????????????????4??????????????????,????,??,???????????????????????????????,?????????,????????

??,???????????????????????????????50%?40%?70%?50%?????????????,????????????????,??,?2027????????????????????1???????????????????????1????????????????????????,?,???80%????,???​​​​ ?????:?????????


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