基于产品几何模型和装配模型的设计系统，能够支持产品自上而下、逐步求精的设计过程和并行产品设计过程。
The design system which is based on geometric model and the above assembly model can support the Top down, decomposition process and the concurrent design process.
设计是一个复杂的问题求解和逐步求精的过程。
Design is a complex process of problem solving and knowledge refinement.
设计是一个复杂的问题求解和逐步求精的过程。
Design is a complex process of problem solving and knowledge refinement.
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