This modeling provides good information supports for expressing the information of product assembly model levels, assembly relations and features.
该模型对于表达产品装配模型的层次信息、装配关系信息以及特征属性信息等提供了良好的信息支持。
Modeling spatial features in land and housing geographic information system (GIS) based on Geographic Markup Language (GML) is studied.
在分析土地房产要素特点的基础上，探讨了土地房产空间要素的GML模型及其应用。
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