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

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

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

?:??????