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介绍用单探头斜平行扫查对T字对接焊缝进行探伤的技术要点、指出该方法的局限,介绍用双探头作一发一收方法来探测危害性缺陷。
This paper introduces the technical points of T-butt welding with single-probe diagonal parallel scanning, points out the limitation of this method, and introduces the double-probe as one method to detect harmful defects.