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

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

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