The conceptual modeling elements and mutual relations between them are discussed and some key technical problems are identified in the development of feature based temporal - spatial data models.
讨论了基于特征的概念模型要素及相互关系；提出了基于特征的时空数据模型所面临的关键技术。
Within network collaborative design environment, real-time data exchange and feature semantic conformity become a key problem for collaborative design on semantic feature modeling.
在网络化同步协同设计环境中，如何实现用户系统之间的实时数据交换、维护特征语义的一致性，成为语义特征造型协同设计的关键问题。
The study of automatic exchange between modeling and data of 3-D solid modeling based on feature and dynamics system.
本文论述了基于特征的三维实体造型与分析系统之间的模型及数据自动转换的问题。
Simulating the model with the testing data, analysis the network performance, proving the feasibility of modeling and the model has the feature of high-precision and fitting.
用测试样本对所建模型进行外推性能测试，对结果进行分析，证明建模具有可行性以及所建模型具有良好的拟合性能和外推性能。
The key technique of the technical scheme for electronic sand table, such as data processing, terrain modeling, feature matching, is introduced in details in this paper.
然后提出并实现面向土地利用规划的电子沙盘制作的技术方案，详细介绍了数据处理、地形模拟与要素匹配等关键技术。
The key technique of the technical scheme for electronic sand table, such as data processing, terrain modeling, feature matching, is introduced in details in this paper.
然后提出并实现面向土地利用规划的电子沙盘制作的技术方案，详细介绍了数据处理、地形模拟与要素匹配等关键技术。
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