Terms for subject Navigation containing Echo

English	Chinese
combined echo ranging-echo sounding	联合回声测距和测深
hydrographic precision scanning echo sounder	水道测量精密扫描回声测深仪
inverted echo sounders	反向【倒置】式回声测深仪
inverted echo sounders with pressure gauges	带压力计的反向回声测深仪
multibeam echo sounders	多波束反射测深仪
submarine explosive echo ranging	水下爆炸回声测距