| |||
| espectro de radiofrecuencia; espectro radioeléctrico | |||
| |||
| espectro de radiofrecuencias | |||
|
radio-frequency spectrum : 6 phrases in 3 subjects |
| Communications | 4 |
| Electronics | 1 |
| Information technology | 1 |
| |||
| espectro de radiofrecuencia; espectro radioeléctrico | |||
| |||
| espectro de radiofrecuencias | |||
|
radio-frequency spectrum : 6 phrases in 3 subjects |
| Communications | 4 |
| Electronics | 1 |
| Information technology | 1 |