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