10152| 17
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畫圖工(30)——交錯軸斜齒輪 |
點評
斜齒和交錯軸斜齒輪確實不太容易分清
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點評
幫人測繪
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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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