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

??
???:????