 |
| |||
| Doppelröhre f; Doppelsystemröhre f | |||
| двойная лампа: 15 phrases in 7 subjects |
| Automobiles | 1 |
| Cinema equipment | 1 |
| Electronics | 7 |
| Mining | 1 |
| Radio | 3 |
| Technology | 1 |
| Telephony | 1 |
|
| |||
| Doppelröhre f; Doppelsystemröhre f | |||
| двойная лампа: 15 phrases in 7 subjects |
| Automobiles | 1 |
| Cinema equipment | 1 |
| Electronics | 7 |
| Mining | 1 |
| Radio | 3 |
| Technology | 1 |
| Telephony | 1 |