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提出一种测量活塞环外圆轮廓的方法，介绍了根据该方法研制的轮廓仪的测量方案、仪器结构、误差分析和测试结果。
A method of measuring the outline of the piston ring was proposed. The measurement scheme, instrument structure, error analysis and test results of the profiler developed by the method were introduced.