25461| 61
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高速旋轉(zhuǎn)平臺的設(shè)計 |
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點評
臨界轉(zhuǎn)速要不要考慮
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點評
這是給他的考試題,買了就不及格了
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小黑屋|手機版|Archiver|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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