7314| 16
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車削A3鋼,有沒有好的方法提高其粗糙度? |
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點(diǎn)評(píng)
A3可以調(diào)嗎?應(yīng)該是正火吧
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點(diǎn)評(píng)
低碳鋼是不能調(diào)質(zhì),我說錯(cuò)了
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