4442| 7
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求輪子帶動滾筒傳動機構 |
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點評
“要求輪子前進帶動滾筒也可不帶動,后退失效”,就是這個啥意思?還是畫圖說事兒吧。。。
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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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