48677| 32
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鋼對鋼的摩擦自鎖角度是多少? |
點評
查一下摩擦系數(shù)不就行了
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評分
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點評
這個跟鐵塊重量沒關(guān)系的
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點評
弱弱的問一下,摩擦圓的摩擦半徑怎么求呢?跟摩擦系數(shù)是個怎樣的關(guān)系呀
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