在重构曲面的基础上，设计产品结构。
In in heavy construction curved surface foundation, design product structure.
其中，船体曲面模型是根据型线设计而生成。
The whole ship model is generated according to linear design.
曲面的构造是曲面拉深件设计中的关键环节。
It is tremendously important to construct a surface in surface drawing design.
此模型反映了刀具曲面、刀具包络面以及设计曲面三者之间的关系。
So the relationship among tool surface, tool envelope surface and designed surface are expressed explicitly.
通过高级形状和复杂曲面来提高的设计效果。
Design effect which enhance through the high-level shape and the complex surface.
汽车车身是复杂的空间自由曲面，是汽车设计与制造中的“瓶颈”。
Application and Research of Auto-welding Technology in Process of Automobile Body Manufacture;
汽车车身是复杂的空间自由曲面，是汽车设计与制造中的“瓶颈”。
Application and Research of Auto-welding Technology in Process of Automobile Body Manufacture;
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