该方法考虑了不为零厚度的金属膜片及窗口槽的影响。
The influences of the nonzero metallization thickness and the mounting grooves are taken into account in the method.
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。
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.
地表的冰厚度达到1米左右，最低温度为零下35摄氏度，但是因为有风寒，温度可降至零下70至80摄氏度左右。
There is about a metre of ice on the surface and the lowest temperature has been minus 35 degrees Centigrade but with the wind chill, it can go down to about minus 70-80c.
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