<p>质心偏转和不偏转两种情况想让它绕着一个旋转轴转动怎么实现</p>

<p><a href="http://www.jishulink.com/content/post/358735" _src="http://www.jishulink.com/content/post/358735">http://www.jishulink.com/content/post/358735</a> 参考下这个帖子</p>