16134| 14
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零件熱處理后能發黑處理么 |
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點評
學習了,以前有批絲桿想做發黑處理,找了好多家做實驗都不理想
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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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