Using ultrasonic wave technique, a simple, rapid, effective and energy-saving method have been developed for preparing leachate of solid waste samples.
采用超声波技术，建立了一种简便快速、节能安全、实用的固体废物浸出液的制备方法。
Based on previous study on the guided wave propagated in the pipeline, the main of this paper is to do experimental study on damage detection in pipes using ultrasonic guided waves technique.
本文在前人对导波在管道中传播的理论基础上，重点对管道进行了损伤检测的实验研究。
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