??
????????????1??20?? ??,?????????????????,????????????????????«???»(GB16171.1-2024),??????2012??????????«??»(GB 161712012),????????????,?????????,???????????
???????????????????????,??,2023???????????????????????4.9?,??????????????????70%??????????????????????????,??????????????????????4????????????,???????????????,????????????????,??????????????????????,????,????????
???????????????,??????????????????????????????????????????50%?40%?70%?50%???????????,????????????????????,???,????????2027????????1??????????1?????????,?,??????????????????????????80%???????,???????????? ???:?????
?????????
?????«???????????????»???????????????