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depth sounder
eng.geol. 回声测深仪
hydroel.st. 测深仪
nautic. 回声测深机; 深度探测器
nautic., tech. 回声测深仪
navig. 水深计
oil 探深器
tech. 回声测深计; 测深计; 测深机
depth-sounder
bridg.constr. 测深仪
depth sounder: 19 phrases in 7 subjects
Air defense1
Earth sciences5
Geophysics2
Hydroelectric power stations2
Navigation1
Oil / petroleum1
Technology7