?? > ???? > ??

??????2?28???????

????:2025-02-21 23:14:19 ??:????

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

????????2????????????????21?????? (??????? ?????????????)??????21?????,???????2???????????28?????,???????

??,???,????????????31.1??????,??“????+??”?,???????,????,??17.8??????????????????

???2????????28???????????????? ?????

2024?????12??11???,????,??????????,???,??,?,?33?/?????,???????????13.3?????????????????????,???????????,?0.6?????/????????????

????JT/T489-2019???????????????????1???4?1?1.5?2?3,1????????????????????6?????????1?2.1?3.16?3.75?3.86?4.09,??????????????????????,????6?,?????,??????0.17?????????????????????????

????,????????????30????????????,?,?“?????????????”??

?,???????????????“??????”?????????????,?????,??2??,???????????2????2???????(???),??3.32??????????

?,???????????????????“?”?????????????,???????????,????150????(??????????????????)

??:??

????

  • ????
  • ????