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espectral adj.
light. espectral
espectral: 218 phrases in 25 subjects
Antennas and waveguides8
Automatic control1
Chemistry1
Communications22
Earth sciences29
Electronics63
Environment4
General1
Health care7
Immigration and citizenship2
Labor law2
Life sciences4
Lighting other than cinema27
Mathematics10
Medical3
Natural sciences7
Nuclear physics1
Physical sciences3
Piezoelectric crystals1
Radio2
Radiology1
Statistics9
Technology1
Transport4
Vacuum tubes5