????:1??????????????:???????wx

2????????????

3?????????

4?2023????qt???

5?????????

??6????????????????27???? (???? ??????)?27???????????,??66???/?????

??????????????? ??????????????

????,?????????????????????????????????????????????????,?????????????(????????)??,????????????

???????«????»(JT/T489-2019),?????????66??/?????????????????????????????,????,??(??????????????????????)??????37??/????????????????????????23???/????(????????)??6??????/?;1?4?????1?1.5?2?3,???3????????????4?60%???????;1?????????6???????????????1?2.1?3.16?3.75?3.86?4.09,????

?,??30??????,???????????31?,??????????????????,?,??????,???,???????????????????????“?????????????????”????????????,??24??,????6??(?????????)

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