8319| 23
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120°鍵槽標注 |
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點評
誰告訴你加方框代表相對位置關系的,你把位置度公差的國家標準給吃了嗎
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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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