文章详细信息 关键词： 河流演变;自然模型法;弯曲度;入射角;泥沙分选 [gap=925]Keywords: river evolution;natural model method;curvature;inflow angle;sorting of sediment
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The data model is a well organized abstraction of that data, so it is quite natural that the data model has become the best method to understand and manage the business of an organization.
数据模型是对那些数据的组织良好的抽象，因此数据模型成为理解和管理企业业务的最佳方法是极其自然的。
This method is based on a model of human texture perception and is capable of simulating and generating a number of natural textures.
这种方法以人类感知纹理的视觉模型为基础，能够用来模拟和生成多种自然景物的纹理图像。
An interval analysis method was proposed for the influence analysis of the model error to the computational results of natural frequency of structures.
给出了一定误差水平下的模型误差对固有频率计算结果影响程度分析的区间方法。
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