单词sonic depth finder
na.: 音响测深仪
回声测深仪
声波侧深仪
间响测深仪
音响测深仪
A trademark used for a sonic depth finder.
回音测深仪一种声音测深仪的商标
Preliminary research on reservoir silt mud measurement by sonic depth finder with different frequencies
不同频率回声测深仪测量水库淤泥的初步研究