薄板的重心位置可以用悬挂法求出图5所示先在a点把物体悬挂起来作出直线ab然后在d点把物体悬挂起来作出直线de即可知重心在两直线ab Template




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tomski薄板的重心位置可以用悬挂法求出图5所示先在a点把物体悬挂起来作出直线ab然后在d点把物体悬挂起来作出直线de即可知重心在两直线ab coloring