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espectro n
commun.	phantom; spectrum mask
math.	spectrum

espectro: 70 phrases in 18 subjects

Antennas and waveguides	2
Communications	3
Earth sciences	4
Electronics	10
Environment	3
Life sciences	1
Lighting other than cinema	5
Mathematics	14
Medical	1
Microsoft	3
Natural sciences	3
Pharmacy and pharmacology	1
Physical sciences	5
Power lines	1
Radio	5
Radiology	1
Satellite communications	4
Telephony	4