并运用多元回归分析方法探讨了该港口体系规模组合与空间结构地域差异的成因机制；
The main purpose of this research is to study the regional differences and dynamic evolution of the size combination and spatial structure of the Changjiang River port system in Anhui Province.
通过实地调查和资料分析，揭示了“铜带”钢钴工业的地域组合特征及空间布局的内在联系规律；
The tenitorial combination of the copper-cobalt industries and the regularity of the inter-relations of the metallurgical industrial allocation in the Copperbelt are discussed.
应用推荐