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通过对当量孔孔径大小及探头不同K值的讨论,得出超声检测中缺陷定位误差的数值,从而防止焊缝超声检测中根部缺陷的漏检。
By discussing the hole size of the equivalent hole and the different K value of the probe, the numerical value of the defect localization error in the ultrasonic testing is obtained, so as to prevent the missing detection of the root defect in the ultrasonic testing of the weld.