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分析对飞机“Ｕ”形环状结构件进行原位超声检测的三种方法，并指出了磨制探头斜楔时应注意的问题．
In this paper, three methods of in-situ ultrasonic testing of aircraft “U” ring structures are analyzed, and the problems that should be paid attention to when grinding the probe wedges are pointed out.