介绍了一次上海市域钢焊缝超声检测能力验证活动，探讨了结果处理方法和能力评价原则，重点讨论了可能导致不满意检测结果的原因及技术分析和建议。%In this paper the process of a proficiency verification activity of ultrasonic testing for ferritic steel welds was introduced.Methods of result processing, robust statistical techniques and the principle of ability evaluation were discussed,with the focus on the discussion of the possible reasons for unsatisfactory test results and the relevant technical suggestion for the problems.
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