无论刚体作什么形式的运动,其上任意两点的速度在这两点连线上的投影都相等....
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定轴转动刚体的同一转动半径线上各点的速度矢量相互平行,加速度矢量...
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Saturday, September 17, 2022
若质点系内各质点的动量皆不为零,则质点系的动量必不为零。...
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材料力学研究的主要问题是一维构件的基本变形和组合变形问题。这类问...
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3.小孔口应力集中现象中有两个特点:一是(),即孔附近的应力远大...
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只要两个力大小相等,方向相同,则它们对物体的作用效果相同。...
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在弹性力学里分析问题,要考虑静()、()和()三方面条件,分别建...
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