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介绍了测量局部凸圆半径的一种新方法及其设计方案，该方法能直接测读圆心角大于５３°的局部 凸圆半径，不需要二次计算，适于生产现场使用。
A new method to measure the local convex radius and its design scheme are introduced. The method can directly measure the local convex radius with the central angle greater than 53 °, and does not need the second calculation, so it is suitable for the production site.