| |||
| Elektronenröhre f | |||
| Elektronenroehre f | |||
|
electron valve : 5 phrases in 4 subjects |
| Antennas and waveguides | 1 |
| Electronics | 1 |
| Measuring instruments | 2 |
| Technology | 1 |
| |||
| Elektronenröhre f | |||
| Elektronenroehre f | |||
|
electron valve : 5 phrases in 4 subjects |
| Antennas and waveguides | 1 |
| Electronics | 1 |
| Measuring instruments | 2 |
| Technology | 1 |