angle of repose:
angle of repose:
发布时间：2025-12-25 11:12:10
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答案：粒子在粉体堆积层的自由斜面上滑动时受到重力和粒子间摩擦力的作用,当这些力达到平衡时处于静止状态。休止角就是粉体堆积层的自由斜面与水平面所形成的最大角。
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