reflected ultrasonic waves
reflected ultrasonic waves
反射超声波
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The principle of measuring the self-height of cylindrical hole defect by ultrasonic tip diffraction technique was analyzed based on the characteristics of reflected and diffracted waves.
根据柱孔缺陷的端点反射波和衍射波的特点，分析了用端点衍射法测定柱孔类缺陷自身高度的原理。
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