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????:2025-01-21 05:48:05 ??:????

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??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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