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depth sounding
avia. 深度测量
earth.sc. 〔回声〕测深法
navig. 测深
oil 水深测量
tech. 测量水深
depth sounding: 37 phrases in 9 subjects
Aviation1
Earth sciences5
Electronics1
Engineering geology1
Hydroelectric power stations1
Oil / petroleum5
Shipbuilding3
Space1
Technology19