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spectrum density
avia. 谱密度
el. 频［光］谱密度
telecom. 频谱密度
spectrum density
: 37 phrases in 15 subjects
Air defense3
Artificial intelligence2
Aviation1
Bridge construction2
Communications1
Electronics7
General2
Geophysics1
Information technology1
Mathematics1
Shipbuilding1
Space6
Technology7
Telecommunications1
Wind Energy1

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