4924| 15
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曲柄滑塊機構(gòu)理論和現(xiàn)實有矛盾嗎? |
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點評
你糊涂了
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點評
你百度一下,百度百科上詳細的
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Archiver|手機版|小黑屋|機械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網(wǎng)安備33038202004372號 )
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