Terms for subject Earth sciences containing Echo

English	Chinese
combined echo ranging and echo sounding	回声测距与测深综合系统
digital radar echo signal processor	数字〔化〕雷达回波信号处理器
directional explosive echo ranging	定向爆炸回声测距
echo depth sounder	回声测深器
echo doppler indicator	回波多谱勒指示器
echo range equipment	回声测距仪
echo sounding	回声测深
echo-sounding device	回声测深仪
echo sounding room	回声测深室
flutter echo	多重反射
flutter echo	多次〔多源〕回声
flutter echo	颤动回波〔回声〕
global horizontal echo sounding technique	全球水平探测技术
inverted echo sounder	倒置式回声测深仪
inverted echo sounder with pressure gage	压力表式倒置回声测深仪
multibeam echo sounders	多波束回声探测器
precision echo sounding recorder	精密回声测深记录仪
pulse-echo-overlap	脉冲-回波重叠
secure echo-sounding equipment	固定式回声测深仪
strong echo gradient	强回波梯度
ultrasonic echo ranging equipment	超声回声测距仪