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??????28*1800*8m??纣?????÷?????????????????

?????????2014/10/29
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??????28*1800*8m??纣?????÷?????????????????

?纣???????????????????????????????????????????????????壬????????????????????????????????????β????q????????????????????????????í??????????A3q?????????????????16q????????????????12Mnq??12MnVq??15MnVNq??16Mnq??????????????4.5~50?????<br><br>????纣?????????????????<br><br>?纣????????????????????????41*2??

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?纣????????????????????????

41*2480*9450
41*2480*9450
41*2480*9450
41*2480*9450
41*2480*9450



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