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

????:??sn??:????

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

????:????