5694| 19
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這種空心軸在鉆采設備里用在什么地方? |
點評
求解,剖視圖沒看到外徑尺寸.....
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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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