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

????????“??”?????????????,?????,????????????????????????,?????????2???????????5?????,?????????

????(??/?????????????????-????)??,???,?????????????,?282.77????,????10Mpa?

?81.52?????,???????????????????,??24.1?????????,???????48.7%(?????12??),??47.9%(???11.8??),??????????29.1%(???????????????????7.2??????????????),????20%;??8??,???????30%,????10???

?,??,????????????????220????????,??70%,????2027???????,?,?????????(???? ?????? ?? ???????????????????)

????:?????