6481| 25
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這個(gè)葉輪怎么加工?請(qǐng)教 |
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點(diǎn)評(píng)
抱歉。我還以為這是毛胚件還要精加工呢。。。
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點(diǎn)評(píng)
鑄造用的模具又如何加工呢?鉗工手工干出來(lái)?像大國(guó)工匠那樣的?
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