???????2??????28?
???2?????21????? (??????? ???????)?????????????21??????,??2????????????????28??????????????????,????
???????,???????????,????????31.1???,??“?+????”?,???,???,?????????????????17.8?????
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?????(?????)