中文摘要：

论文论述了超声波检测在无损检测领域的应用特点，以及超声无损检测在多个领域的应用情况。通过对超声波检测的原理、波型、连续性和显示方式的分析和对比，重点论述了超声检测在电力系统绝缘子中的应用。介绍了超声绝缘子检测的机理、特点和适用范围，并对各个方法的优缺点进行了对比。在此基础上阐述了超声检测的发展趋势，对空气耦合超声和激光超声检测的方法、优缺点及应用前景进行了简单介绍，为后续的深入研究打下基础。

英文摘要：

This paper discusses the application characteristics of ultrasonic testing in non-destructive detecting domain, as well as the applications of ultrasonic non-destructive testing in multiple areas. Emphases are placed on the application of ultrasonic testing to the insulators of power system through analysis and comparison of the ultrasonic testing principles, waveforms, continuity and display modes. The mechanism, characteristics and application scope of ultrasonic insulator detecting are introduced, and the merits and demerits of different methods are compared. Furthermore, the development trend of ultrasonic testing is predicted, and the advantages and disadvantages of the air coupling ultrasonic testing and the laser ultrasonic testing are simply introduced with their applications prospect.