 |
| |||
| signature | |||
|
信号特征 : 15 phrases in 9 subjects |
| Air defense | 3 |
| Aviation | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| Geophysics | 1 |
| Oil / petroleum | 1 |
| Shipbuilding | 1 |
| Space | 4 |
| Technology | 2 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips