In physics, a rigid body (also known as a rigid object[2]) is a solid body in
which deformation is zero or so small it can be neglected. The distance
between any two given points on a rigid body remains constant in time
regardless of external forces or moments exerted on it. A rigid body is
usually considered as a continuous distribution of mass.

自己搜一下很难吗

【 在 zylthinking2 的大作中提到: 】
: 刚体概念是我在哪里看到的一个名词， 自己瞎理解为无穷坚硬， 形变为0 的东西。
: 我到现在都没有看到过刚体正式定义， 值得你们如此兴奋？
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FROM 119.139.196.*