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| segnale di comando; segnale di controllo | |||
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señales de control : 38 phrases in 10 subjects |
| Communications | 5 |
| Earth sciences | 1 |
| Electronics | 12 |
| Information technology | 4 |
| Patents | 1 |
| Power lines | 3 |
| Power system protection | 5 |
| Rail transport | 4 |
| Transport | 2 |
| Video recording | 1 |
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