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espectral | |||
densidade espectral de … |
widmowy : 69 phrases in 12 subjects |
Antennas and waveguides | 10 |
Communications | 1 |
Electronics | 7 |
Lighting other than cinema | 34 |
Metrology | 4 |
Natural sciences | 1 |
Nuclear physics | 1 |
Piezoelectric crystals | 1 |
Radio | 2 |
Radiology | 1 |
Transport | 2 |
Vacuum tubes | 5 |