On applying symbol modeling principle to product conceptual design, the limit of geometry expression is avoided, and the innovation and abstract requirement of product concept modeling is fulfilled.
将符号建模原理应用于产品概念设计，脱离了几何表达的束缚，满足了概念方案建模的创新性和抽象性要求。
The model of machine product conceptual design under virtual environment already is not stay no longer stage of tradition's principle sign. But it should have audio-visual and sight.
虚拟环境下的机械产品概念设计模型已不再停留在传统的原理符号设计阶段，而应具有直观性和可视性。
The model of machine product conceptual design under virtual environment already is not stay no longer stage of tradition's principle sign. But it should have audio-visual and sight.
虚拟环境下的机械产品概念设计模型已不再停留在传统的原理符号设计阶段，而应具有直观性和可视性。
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