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

2????????

3???????

4??????

5?????????????

??“?????”????,???????????????????,?,???????????????????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?????,???,????????(?? ?? ????????????????? ????)

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