crust 3 d structure model 地壳三维结构模型
According to lifting hoist reel tube shell structure and work situation, a 3-d calculated model of tube shell has been established with finite element analysis method.
采用有限元分析方法，根据提升绞车卷筒筒壳的结构和工作情况建立了筒壳的三维计算模型。
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。
The design of the cable stayed bridge structure is optimized by using 3-d space finite element model.
应用三维空间有限元模型，进行斜拉桥结构优化设计。
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