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| Radio Frequency | |
| commun. | radiofrecuencia |
| radio frequencies | |
| astr. | radiofrecuencias |
| radio frequency | |
| commun. | frecuencia radio; radio frecuencia |
| stat. commun. | frecuencia radioeléctrica; radiofrecuencia |
| standard | |
| construct. | poste |
| cultur. | asta |
| econ. | norma |
| ed. | fijo |
| environ. | norma |
| footwear | patron piano |
| health. | criterio; estándar |
| industr. construct. | patrón plano; estandarte |
|
radio-frequency standard : 3 phrases in 2 subjects |
| Electronics | 1 |
| Technology | 2 |