5639| 12
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求一個異形齒的加工工藝 |
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點評
同意,不過要保證每根棒料都是夾緊的。
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Archiver|手機版|小黑屋|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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