有多少设计是限于创造工具而被迫选择了正切的造型形式(比如有切线限制的实体建模软件)？
How many are tangentially sculpted because of the tools of creation (tangent-restricted solid modeling software)?
大幅度地减少了人机交互时间，解决了高速列车流线型结构实体造型过程中设计周期过长的问题。
The time spent on human computer interaction is greatly reduced during the design process, as a results the problem on how to shorten the long period of structure design is largely solved.
基于混合实体造型HBCR技术，通过提取钣金冲压件形状特征模型，实现了基于特征的钣金模型设计。
Based on this HBCR, the shape features are extracted from solid model for sheet metal punching part to realize the "feature-based" modeling design.
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