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    ???????17-02-24      ???????

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    ??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????10%??425#?????????????????????????????????????????????????????????????????????????????????????????????????????????????治????????????????泱?????????????????

     
    ??????????????????????????????????????2С????????,?????20?????10???????????15—23%?????????????????????????????????????????????????????????????????????????????????????????500???????????????£?????????????????????á????????????????????????????????????????????????????????????????7??????????
     

    ??1????ú????? ú??30%??ˉ??30%?????30%?????8-10 %???????0.2%????100kg/cm2??8%??? 150kg/cm2??10%??? ??2???????? ???60%?????3%?????8-10%???????3%?????0.2%?? ??3???????? ????60%?????30%?????10-15%???????0.5% ?? ??????0.2%???????0.2% ???????0.2% ??????????? ??4??????????????? ???90%?????8-10%????? 0.2%???????0.2% ?? ??5?????????? ???????60%?????30%?????10-15%????? ??0.2%???????0.2%???????0.2% ?? ??6?????????ú????? ??ú??60%??ˉ??30%?????8-10%???????0.2%???????0.2% ??

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