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