在世界经济全球化、地区经济一体化日趋深化的当今世界，国际经贸合作对于经济发展的促进作用日益加强。可以说，能否有效地参加国际分工和扩大与其他国家的经济技术交流已成为决定一国经济发展态势的最重要因素之一。对于一国之内的不同地区也是这样，地区间经济发展程度的差 In the current world in which the globalization of the world economy and the deepening of regional economic integration have deepened the promotion of economic and trade cooperation by international economic and trade cooperation. It can be said that the effective participation of the international division of labor and the expansion of economic and technological exchanges with other countries have become one of the most important factors that determine the economic development of a country. The same is true for different regions within a country, with poor economic development among regions