2822| 6
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鏈傳動的中心距的選擇問題?? |
點評
加起來就是偶數節,鏈輪一般奇數節。
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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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