... Jumper valve回跳阀； Thickness of metal parts金属部件厚度； Fabricated assemblies结构本体 ...
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Sedimentary speed: unit time parts deposition on the surface of the metal thickness.
沉积速度：单位时间内零件表面沉积出金属的厚度。
Based on the study of features of sheet metal parts and Zero Thickness Hypothesis, a new mechanism of naming and identifying topological entities of a feature model is proposed in this paper.
本文在对钣金件特征研究和“零厚度”假设的基础上，提出了一种钣金件拓扑元素命名和辨别的新方法。
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