4030| 7
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求告知鋼對橡膠的摩擦系數的取值范圍 |
點評
謝謝!
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點評
對的,做個斜坡臨界滑動試驗來測定
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點評
腦洞打開
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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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