第三章：建立圆柱要素尺寸公差、形状公差、定向公差和定位公差的数学模型。
In the third chapter, mathematical model of size tolerance, form tolerance, orientation tolerance and location tolerance of cylindrical feature was established.
结合李群李代数方法，系统地研究了多特征的位形空间理论，给出了定向公差约束子流形的局部参数显式表达。
A systematic introduction to the theory of configuration space of multi-features is given, appealing to Lie groups and algebras.
技术图纸。定向和定位公差。投影的公差带。
Technical drawings. Tolerancing of orientation and location. Projected tolerance zone.
技术图纸。定向和定位公差。投影的公差带。
Technical drawings. Tolerancing of orientation and location. Projected tolerance zone.
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