 |
| |||
| 参考地面 | |||
|
ground- reference : 12 phrases in 7 subjects |
| Automobiles | 2 |
| Aviation | 5 |
| Earth sciences | 1 |
| Electric machinery | 1 |
| Geophysics | 1 |
| Nautical | 1 |
| Technology | 1 |
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