????:1???????:???????

2?????50?????

3?????????

4?????????

5???????

?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??(?????)

??????:????