By abstracting of relative position, orientation and topology relation between part function surfaces as a qualitative symbol set, the conceptual part structure qualitative models are presented.
通过将零件上功能表面之间的相对位置、朝向以及拓扑关系抽象成定性符号集合，建立了概念零件结构定性模型。
By abstracting of relative position, orientation and topology relation between part function surfaces as a qualitative symbol set, the conceptual part structure qualitative models are presented.
通过将零件上功能表面之间的相对位置、朝向以及拓扑关系抽象成定性符号集合，建立了概念零件结构定性模型。
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