Terms for subject Engineering geology containing Echo

English	Chinese
echo sounder	测声仪
echo-sounding	回声测探
echo-sounding receiver	回声接收器
inverted echo sounder tide gauge	倒置回声测潮计
sonic echo depth finder	回声测深仪
sonic echo sounder	回声探测仪
supersonic echo sounder	超声波回声探测仪