????:1??????????:??????

2?????QQ?

3???????????

4????????????

5?????????????

??“??”??,?????????,??????,???????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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