Based on the principle of GIS and database system, data model, function modules and agent structure of sediment silting system of watercourse and reservoir zone is designed.
根据GIS、数据库系统的原理，设计实现了河道与库区泥沙淤积系统的数据模型、功能模块和主体结构，成功地将基础数据库进行了入库操作。
With a non local convection model, this paper reveals the structure of convection overshooting zone.
根据一种非局部对流理论，我们揭示了贯穿对流区的结构。
A new mathematic model named entropy evaluation method is introduced to analyze the structure of city Numbers in different size in a given zone.
引入一种新的数学模型方法——熵值估计法，对地域中不同规模的城市数量结构进行分析。
Then it draws seven important conclusions and sets up a comprehensive evaluation model for capital structure and finds out optimal capital structure zone.
运用实证研究成果，建立我国上市公司资本结构的综合评价模型，并运用该模型求解出最优资本结构区间。
At last, comparing with other valley-cities, this thesis indicated the model, characteristics and dynamical mechanism of development zone and urban spatial structure evolvement of Lanzhou city.
文章最后通过与同类型的河谷型城市的横向对比，揭示出开发区主导下的兰州城市空间结构演进的特征、模式和动力机制。
At last, comparing with other valley-cities, this thesis indicated the model, characteristics and dynamical mechanism of development zone and urban spatial structure evolvement of Lanzhou city.
文章最后通过与同类型的河谷型城市的横向对比，揭示出开发区主导下的兰州城市空间结构演进的特征、模式和动力机制。
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