37984| 8
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齒輪輪轂孔和軸配合公差一般多少? |
點評
兄弟,有沒有說錯
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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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