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

???????????????????“??”??????,??,???????????????????,????????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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