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外六角形狀的沉頭孔如何加工? |
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相關(guān)帖子
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點(diǎn)評
這個(gè)方法可以,實(shí)在不行,再加放電加工
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點(diǎn)評
螺母收緊,六角頭不動(dòng)的
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點(diǎn)評
對頭!
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