?? > ???? > ??

«??»???????????????

????:2025-01-20 16:56:29 ??:????

????:??????:??????

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

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

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

????

  • ????
  • ????