This paper introduces the rock acoustic wave test in protective layer of dam foundation in Fenhe Secondary Reservoir and conducts more detailed analysis on the test result.
文中介绍了汾河二库基坑保护层开挖中对基岩的声波测试，着重对测试结果进行了较详细分析。
The acoustic source of plane circular pistons with the radiating transient pulse wave finds wide application in the ultrasonic inspection and test.
幅射瞬态脉冲波的圆形活塞声源在超声检测中得到广泛应用。
Through a theoretical analysis of a plane standing-wave sonic field a test rig on acoustic agglomeration and removal characteristics of burned coal inhalable particles has been designed and set up.
通过对平面驻波声场的理论分析，设计并建立了燃煤可吸入颗粒物声波团聚清除特性的实验台。
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