Ultrasonic Nondestructive Testing and Evaluating System for the Brazing Quality of a Guide Ring
GAO Shuang-sheng1 (高双胜), CHI Da-zhao2* (迟大钊), GANG Tie2 (刚铁)
Journal of shanghai Jiaotong University (Science) . 2012, (5): 527 -530 .  DOI: 10.1007/s12204-012-1319-4