 |
| |||
| 呼救系统 | |||
| distress system: 20 phrases in 9 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Earth sciences | 1 |
| Electronics | 3 |
| Name of organization | 1 |
| Nautical | 1 |
| Shipbuilding | 1 |
| Space | 7 |
| Technology | 4 |
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