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老工业基地的再振兴是一个重要研究课题传统老工业基地的区域经济效益日趋滞后的原因主要有四：一是资源趋近枯竭，生产的自然条件恶化造成成本大幅度上升，大量外延投入形成的新增生产能力的主体部分只能递补原有生产能力的递减；这种状况主要存在于采掘业及７０年代开发...
The rejuvenation of the old industrial base is an important research topic There are mainly four reasons for the lagging economic benefits of the traditional old industrial bases: First, the resources are getting depleted and the natural conditions of production are causing the costs to rise sharply, resulting in a large amount of external investment The main part of the new production capacity can only make up for the diminished capacity of the original production; this situation mainly exists in the extractive industries and the 1970s ...