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wave spectrum

bridg.constr. 波谱
nautic., tech. 波浪谱
oil 波长光谱
tech.
wave spectrum
: 53 phrases in 12 subjects
Air defense3
Astronomy1
Business1
Earth sciences1
Ecology2
Electronics1
Hydrology1
Metallurgy1
Oceanography & oceanology3
Oil / petroleum2
Space1
Technology36