对域际相互关系的研究是区域经济学理论中最为重要同时又是研究得最不充分的一个部分。换句话说，目前尚没有阐述域际经济相互关系的深刻理论。然而，对国际经济关系理论，即各国间的社会经济关系理论，却在很久之前并一直在卓有成效地进行研究，因此，在这一方面取得了重要而? The study of inter-regional relations is one of the most important and most under-researched parts of regional economic theory. In other words, there is no profound theory that expounds the interrelationship between the inter-regional economies. However, the theory of international economic relations, that is, the theory of socio-economic relations among nations, has been studied very fruitfully long ago and has therefore gained importance in this respect.