 |
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| commande de réglage | |||
| signal d'action directe | |||
| signal vers l'avant | |||
| signal en avant | |||
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| signalisation vers l'avant | |||
| forward signal: 18 phrases in 6 subjects |
| Antennas and waveguides | 1 |
| Communications | 5 |
| Electronics | 8 |
| Semiconductors | 1 |
| Telecommunications | 2 |
| Telegraphy | 1 |
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