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| frequenza media | |||
| frequenza intermedia | |||
| FI acronimo | |||
| Anglais glossaire | |||
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| IF | |||
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| IF (as in IF stage) | |||
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intermediate-frequency : 20 phrases, 7 sujets |
| Communications | 11 |
| Électronique | 2 |
| Informatique | 2 |
| Métallurgie | 1 |
| Radio | 1 |
| Sciences de la Terre | 2 |
| Sciences naturelles | 1 |