业结构雷同是环渤海地区经济发展中一个存在的问题。长期在计划经济体制下形成的，大量的大而全和小而全的重复建设，造成了三省两市的经济间互补关系较弱，存在着相互争夺资源、争夺市场和封闭竞争、相互排斥的局面。在当前的激烈的市场竞争的环境下，减少低水平低层次上的竞 The same industrial structure is an existing problem in the economic development of the Bohai Sea Rim. For a long time, a large number of large-scale and small-scale redundant constructions formed under the planned economic system resulted in weaker complementarities among the economies in the three provinces and the two cities, mutual competition for resources, contention for markets and closed competition and mutual exclusion situation. In the current fierce market competition environment, reduce the level of low-level competition