最小外接圆（Minimum Circumscribed Circle）： 这是完全封闭外型而不相交之最小圆。由最小外接圆波谷的距离即 为其真圆度。
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Finally, four roundness error's evaluation methods and basic principles are stated in this paper. Those methods include the minimum circumscribed circle、the least square circle method、the maximum inscribed circle and the minimum region method.
本文最后阐述了最小外接圆法、最大内切圆法、最小二乘圆法和最小区域圆法等四种圆度误差评定的方法。
参考来源 - 孔径圆度自动检测系统研究·2,447,543篇论文数据，部分数据来源于NoteExpress
以最小外接圆法评定了金刚石颗粒投影的圆度。
The roundness of grit's projection was assessed by minimum circumcircle method.
文中分别介绍了用计算机求最小外接圆和最大内切圆的新算法。
The new algorithms to find out minimum circumscribed and maximum inscribed circle with computer are respectively introduced.
介绍按最小外接圆法、最大内接圆法评定圆度误差的一种快速、简便、易于微机实现的数据处理方法。
The data processing method for evaluation the circularity error with minimum circumscribed circle and maximum incircle was introduced. The method is quick and convenient to realize on computer.
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