Terms for subject Earth sciences containing echo sounding

English	Chinese
combined echo ranging and echo sounding	回声测距与测深综合系统
echo sounding	回声测深
echo sounding room	回声测深室
echo-sounding device	回声测深仪
global horizontal echo sounding technique	全球水平探测技术
precision echo sounding recorder	精密回声测深记录仪
secure echo-sounding equipment	固定式回声测深仪