摘要
本文将物理系统层内进化扩展到世界经济系统中去，通过对世界经济循环结构与物理系统进化的层次结构关系的探讨，论述了世界经济周期的特征及经济周期的熨平作用。
This paper pushs inter -- layer evolution on physic system into the world economy system, simply discusser the relation between the circle structure on the world economy and the layerstructure on physic system evolution, and deeply discuses the world economic circle's peculliarityand economic circle's flatiron function
