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| segnale di controllo | |||
| segnale di comando | |||
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signal de commande : 42 phrases in 10 subjects |
| Automated equipment | 2 |
| Communications | 15 |
| Earth sciences | 1 |
| Electronics | 10 |
| Information technology | 2 |
| Measuring instruments | 2 |
| Mechanic engineering | 1 |
| Power lines | 2 |
| Power system protection | 5 |
| Transport | 2 |