Initial borehole acousticimaging relied on using the monopole source and focusing the analysis on the radiated compressional body waves that were reflected back to the borehole.
最初的井眼成像依赖于单极子源并侧重于分析反射回井眼的辐射纵体波。
2
As an imaging tool, the acoustic lens beats ultrasound imaging because the sound pulses can be focused much more tightly and can be easily repositioned.
作为一个成像工具，声透镜冲击了超声波的显像，因为声脉冲可以更加紧密地聚焦，可以很容易地重新定位。
3
Other proposed USES for the self-plucking acoustic fibres include nets that monitor the flow of water in the ocean and large-area sonar imaging systems.