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频谱 pínpǔ
el.mach.	frequency spectrum; spectroscopic
hydroel.st.	spectrum
life.sc.	frequency content
met.	spectra
plast.	frequence spectrum
wind.	frequency spectrum
频光谱
AI.	spectrum
射频，无线电信号频谱 pínpǔ
gen.	spectrum
无线电频谱 pínpǔ
auto.	spectrum

频谱: 762 phrases in 42 subjects

Acoustics	1
Advertising	1
Agriculture	2
Air defense	80
Artificial intelligence	10
Automobiles	9
Aviation	27
Bridge construction	3
Business	1
Chemistry	5
China	1
Communications	5
Construction	2
Earth sciences	12
Electric machinery	9
Electronics	110
Engineering geology	2
Environment	2
General	13
Geology	4
Geophysics	18
Health care	1
Information technology	18
Mathematics	2
Metallurgy	23
Multimedia	3
Nautical	4
Nursing	1
Oil / petroleum	46
Otorhinolaryngology	6
Piezoelectric crystals	1
Plastics	1
Radio	1
Rail transport	4
Remote sensing	4
Shipbuilding	10
Space	79
Sports	1
Technology	196
Telecommunications	38
United States	1
Wind Energy	5