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

??: ????
2025-02-22 02:24:12

?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

???? ????