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spectral density
bridg.constr. 谱密度
IT 频谱密度
met. 谱线密度
phys. 光谱频谱密度
tech. 光谱密度; 线密度; 波谱能量分布
spectral density: 108 phrases in 16 subjects
Air defense1
Aviation3
Bridge construction4
Earth sciences10
Electric machinery1
Electronics15
General1
Geophysics9
Mathematics2
Metrology2
Nautical1
Oil / petroleum2
Space12
Technology36
Telecommunications2
Wind Energy7