实践证明采用超声导波技术检测小径管，定位准确，速度快，成本低。
The guided wave transducers are developed and used for NDT of the economizer in fossil plant, which have feature of quick inspection and low cost.
本文对超声导波技术应用于工业管道缺陷无损检测进行了理论和实验研究。
In this paper, industry pipeline defects NDT using ultrasonic guided waves was carried out theoretically and experimentally.
结果表明，超声导波技术检验速度快，可有效地提高检测效率，并且有良好的现场可操作性。
The results show that the technique can improve the testing speed effectively and is suitable to the practical testing occasion.
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