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从焊缝自然缺陷超声波探伤实践中归纳出以分析左右扫查时的缺陷反射波包络线为基础的三条原则,作为判定缺陷是否连续的依据。
In the practice of ultrasonic flaw detection of natural flaws of welds, three principles based on the analysis of the envelope of flaw reflections in the left and right scanning are summarized as the basis for determining whether the flaw is continuous or not.