 |
| |||
| sound spectrometer | |||
| 声频频 谱仪: 10 phrases in 7 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| Geophysics | 1 |
| Shipbuilding | 3 |
| Space | 1 |
|
| |||
| sound spectrometer | |||
| 声频频 谱仪: 10 phrases in 7 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| Geophysics | 1 |
| Shipbuilding | 3 |
| Space | 1 |