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前言声波测试技术发展得很快,目前许多单位都进行了研制,声波仪由—发—收发展到一发四收,由示波器人工读数发展到既有波形显示又有数字显示,并将有自动记录的仪器出现。在发射源方面,由压电法发展到能量很大的电火花法。在换能器方面也进行了卓有成效的研究,各种型号的、适用于不同范围的、多种多样的换能器,都为声波技术广泛的应用创
Foreword Sound wave test technology has developed rapidly. Many units are currently researching and development. The sound wave instrument has been developed from the development of the sound to the development of a quadruple income. The oscilloscope is used to read the manual reading to the existing waveform display and digital display, and there will be automatic Recorded instruments appear. In terms of emission sources, the electric spark method has been developed by the piezoelectric method. In terms of transducers, effective research has also been conducted. Various types of transducers suitable for different ranges and types of transducers are widely used in acoustic wave technology.