 |
| |||
| 检波 | |||
|
wave detection : 9 phrases in 6 subjects |
| Air defense | 3 |
| Aviation | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Metallurgy | 2 |
| Sealing | 1 |
| Space | 1 |
|
| |||
| 检波 | |||
|
wave detection : 9 phrases in 6 subjects |
| Air defense | 3 |
| Aviation | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Metallurgy | 2 |
| Sealing | 1 |
| Space | 1 |