Major in Packaging. Grasp machinery design, machine theory, mechanical machining process, tolerance fitting, and technical measurement, etc.
包装专业；掌握机械设计、机械原理、机械加工制造工艺、公差配合、技术测量、等基础理论。
Be able to label and read surface roughness codes, codes of size tolerance and fitting, and geometrical tolerance codes.
会正确注写和识别表面粗糙度代号，尺寸公差与配合代号，形位公差代号。
A general expression relating the cost of component processing to the tolerance is obtained by fitting to existing data.
从零件加工成本与公差关系的现有统计数据拟合得到普遍表达式用于本模型。
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