19386| 14
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90度折弯件展开时,先减板厚再加折弯系数,是何道理? |
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发表于 2008-3-13 18:23:48
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发表于 2008-4-7 21:28:44
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发表于 2008-6-29 13:53:33
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发表于 2008-11-20 18:20:09
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