frequency-change
| signalling
| frequency change | |
| tech. el. | glissement de fréquence |
| signalling | |
| commun. | signalisation automatique |
| |||
| changement de fréquence; conversion de fréquence | |||
| |||
| glissement de fréquence | |||
|
frequency-change : 18 phrases in 5 subjects |
| Communications | 7 |
| Earth sciences | 2 |
| Electronics | 4 |
| Information technology | 4 |
| Transport | 1 |