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

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

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