介绍了一个服务于公差分析与综合的特征专家系统。
The feature expert system which services tolerance analysis and tolerance synthesis is introduced.
面向加工的表面粗糙度、精度等级、 公差等级等，通过造型特征识别转换得到。
Then, roughness, precision and tolerance for surface machining were obtained by transition of formative feature recognition.
铸造公差适用于具有基准尺寸的铸件轮廓特征区域；
Casting tolerances apply to the location of cast outline features located with basic dimensions.
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