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

??: ????
2025-02-22 08:39:48

?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??????????????(?)

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

??

???:????
??:???????????,??????????,??????????????
???? ??

Copyright ? 2023 Sohu All Rights Reserved

???? ????