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| frequência de comando | |||
| frequência piloto | |||
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control frequency : 21 phrases in 10 subjects |
| Communications | 3 |
| Electricity generation | 1 |
| Electronics | 10 |
| Health care | 1 |
| Mechanic engineering | 1 |
| Patents | 1 |
| Power electronics | 1 |
| Radio | 1 |
| Technology | 1 |
| Transport | 1 |