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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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