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

??

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

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

?????????

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

????????