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

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

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

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