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。
The basic principle of 3d measurement method based on digital phase-shifting and fringe projection techniques is illustrated in this paper.
文中阐述了基于数字相移条纹投影技术的三维测量方法的基本原理。
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