1814| 9
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有做銅冶金設(shè)備的嗎,模具經(jīng)常壞什么原因 |
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點(diǎn)評(píng)
石墨的
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點(diǎn)評(píng)
1.牽引夾頭問(wèn)題,2.不對(duì)正拉歪了,3.模具自身質(zhì)量。
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