 |
| |||
| traveling wave phototube; travelling wave phototube | |||
| 光电行波管: 17 phrases in 6 subjects |
| Air defense | 1 |
| Electronics | 3 |
| General | 1 |
| Radio | 1 |
| Space | 3 |
| Technology | 8 |
|
| |||
| traveling wave phototube; travelling wave phototube | |||
| 光电行波管: 17 phrases in 6 subjects |
| Air defense | 1 |
| Electronics | 3 |
| General | 1 |
| Radio | 1 |
| Space | 3 |
| Technology | 8 |