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densidad espectral | |||
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densidad espectral | |||
concentración espectral |
densita spettrale : 36 phrases in 8 subjects |
Communications | 5 |
Earth sciences | 4 |
Electronics | 18 |
Life sciences | 2 |
Lighting other than cinema | 2 |
Radio | 2 |
Statistics | 2 |
Transport | 1 |