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sounding machine
bridg.constr. 触探机
desert. 测深器
el. 探测机
eng.geol. 测深仪
mining. 声测深仪
tech. 海水测深器; 测水深仪; 测水深机; 测深机
sounding machine: 23 phrases in 4 subjects
Electronics1
Engineering geology2
Oil / petroleum1
Technology19