????:1?????????:????SPa

2?????????

3?????

4???????

5?????

????2?????????????????5???? (??????? ?)?2?????????????????????5????????,????????(1???????????????????28????????2????????????4????????????????????),???????????????????(????????????????)?????????47??????????????????2.7????????????,??110%?

1??????27????????????,??????????????????????????????? ?

?,?,?,?????????????????????????

??,???,??????????97%,??,???????????????????????????????

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