| |||
| Eichfrequenz f; Normalfrequenz f | |||
| Betriebsfrequenz f | |||
|
normal frequency : 5 phrases in 4 subjects |
| Agriculture | 1 |
| Electronics | 1 |
| Natural resourses and wildlife conservation | 2 |
| Technology | 1 |
| |||
| Eichfrequenz f; Normalfrequenz f | |||
| Betriebsfrequenz f | |||
|
normal frequency : 5 phrases in 4 subjects |
| Agriculture | 1 |
| Electronics | 1 |
| Natural resourses and wildlife conservation | 2 |
| Technology | 1 |