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

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

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