The design of the structure of Caseegrain drawtube in space remote instrument was introduced. The product model was constructed using 3-d CAD technique.
介绍了空间遥感仪器中卡塞格伦镜筒的结构设计，利用三维CAD技术构建了产品模型。
With wind turbine blades as the research object, this thesis elaborates their programming design, CAD system development, 3-d entity modeling, and dynamics analysis.
本文以风力机叶片为研究对象，在叶片的程序化设计、CAD系统开发、三维实体造型和动力学分析等方面进行了研究。
The 3-d CAD design of small-sized pipe has the efficiency 10 times over the traditional manual design with accurate and reliable data, which has obtained better results during construction.
计算机小直径管三维设计，其效率是传统手工设计的数十倍，数据准确、可靠，在施工中收到较好的效果。
The 3-d CAD design of small-sized pipe has the efficiency 10 times over the traditional manual design with accurate and reliable data, which has obtained better results during construction.
计算机小直径管三维设计，其效率是传统手工设计的数十倍，数据准确、可靠，在施工中收到较好的效果。
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