对非自由体的某些位移起限制作用的周围物体称为（）。_爱下问搜题

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问题填空题

对非自由体的某些位移起限制作用的周围物体称为（）。

答案

参考答案：约束力

阅读理解

阅读理解。

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名词解释

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