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6061表面處理疑問 |
點評
那為什么要噴砂后精車呢?直接精車到位不好嗎?
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小黑屋|手機版|Archiver|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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