| |||
| 回波反射信号技术 | |||
| 回波技术 | |||
|
echo technique : 11 do fraz, 6 tematyki |
| Chemia | 1 |
| Elektronika | 1 |
| Górnictwo | 1 |
| Lotnictwo | 3 |
| Nauka o ziemi | 1 |
| Technika i technologia | 4 |
| |||
| 回波反射信号技术 | |||
| 回波技术 | |||
|
echo technique : 11 do fraz, 6 tematyki |
| Chemia | 1 |
| Elektronika | 1 |
| Górnictwo | 1 |
| Lotnictwo | 3 |
| Nauka o ziemi | 1 |
| Technika i technologia | 4 |