强化区域性中心城市和中心区的辐射带动作用。
Strengthening regional key city and central area radiation lead role.
营造软环境为郑州区域性中心城市建设提供保障支撑；
Creating soft environment to provide guarantee support for construction of Zhengzhou regional central city;
通过引入断裂点模型，对桂林建立区域性中心城市的辐射范围作出了评估。
By using the Breakpoint Model, the paper made objective assessment for the radiation scope of Guilin being regional central city.
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