2232| 4
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用什么材料:兩個面硬摩擦,平面精度0.8微米,希望越耐磨越好 |
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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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