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

??:???

??

??:???????????,??????????,??????????????