4768| 28
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求指教:讓兩塊板擰緊后上下兩個板的邊是平行的 |
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點評
內螺母加工的方式配作。
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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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