8527| 19
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304不銹鋼鉆床加工,,難,! |
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點(diǎn)評(píng)
分析的對(duì),,主要還是夾渣燒刀。
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點(diǎn)評(píng)
端面還是有氧化皮
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點(diǎn)評(píng)
說錯(cuò)了,,不是氧化皮,可能叫冷硬層
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