从单个气泡的存在形式及其物理意义出发，针对水中声波对气泡的作用，进而形成的共振现象，阐述了气泡的“消声”特点。
Basing on the form of a single bubble and the resonance phenomenon caused by the effect of sound waves on the bubbles in water, the paper expounded "deaden sound" character of bubbles.
它对震动和海水中传播的声波都非常敏感。
It is very sensitive to vibrations, to sound energy traveling through the seawater.
多普勒计程仪是根据声波在水中的多普勒效应原理而制成的一种精密的测速和计算航程的仪器，它是船用导航设备的重要组成之一。
Doppler log is a precise instrument, which is used to measure ship velocity and calculate its voyage on the theory of Doppler Effect of sound wave in water.
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