1984年7月20日,南京大学声学研究所与扬州市换能器厂,在扬州市举办了为期20天的“声学基础理论及岩体声波检测”学习班。来自全国20个省市的60多名学员参加了学习。他们主要来自石油、煤炭、水利水电、普通高校等系统的科研和生产单位。南京大学信息物理系系主任吴文虬副教授参 On July 20th, 1984, the Institute of Acoustics of Nanjing University and Yangzhou Transducer Factory held a 20-day training course in acoustic basic theory and sound detection of rock mass in Yangzhou. More than 60 participants from 20 provinces and cities across the country participated in the study. They mainly come from scientific research and production units such as petroleum, coal, water conservancy and hydropower, and ordinary colleges and universities. Associate Professor Wu Wenquan, Head of Information Physics Department, Nanjing University