 |
| |||
| Frequenzstandard m | |||
| Frequenznormal n | |||
| Frequenznormale n | |||
| Eichgenerator m; Frequenznorm f | |||
|
frequency standard : 39 phrases, 8 sujets |
| Communications | 5 |
| Électronique | 4 |
| Études culturelles | 1 |
| Général | 2 |
| Instruments de mesure | 1 |
| Physique | 3 |
| Radio | 1 |
| Technologie | 22 |