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

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

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

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