9953| 5
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40Cr材質,硬度HRC30-35,攻M10X1-6H的螺紋用什么絲攻好? |
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小黑屋|手機版|Archiver|機械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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