Editing in 3d environment by a digital control plane, the method can deal with some geometry efficiently, such as point, line, and polygon, etc.
由数字控制平面的3d环境中的编辑，该方法可以处理一些几何效率，如点，线，多边形等。
Three kinds of new methods used for detecting fiber volume fraction of 3D woven composite were introduced, such as weighing method, theory model calculation method, digital image analysis method.
文中阐述了适用于三维机织复合材料纤维体积含量测定的3种新方法：称量法、理论模型法、数字图像分析法。
This paper introduces the frame system of digital city and the process of 3d city model, discusses CSG model method of buildings.
介绍了数字城市的框架体系和三维城市模型的建模过程，探讨了城市建筑物的CSG建模方法。
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