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介绍了为检验汽轮机T型叶根轮缘微小裂纹而研制的微型短前沿超声波探头、试块及探伤方法和在现场运用中取得的效果。
The miniature short-range ultrasonic probe, test block, flaw detection method and the results obtained in the field are introduced to test the tiny cracks on the T-shaped root rim of steam turbine.