| |||
| 定位与导航系统 | |||
|
positioning and navigation system : 13 phrases in 8 subjects |
| Aviation | 1 |
| Earth sciences | 2 |
| Electronics | 3 |
| Information technology | 1 |
| Navigation | 1 |
| Space | 3 |
| Surveying | 1 |
| United States | 1 |
| |||
| 定位与导航系统 | |||
|
positioning and navigation system : 13 phrases in 8 subjects |
| Aviation | 1 |
| Earth sciences | 2 |
| Electronics | 3 |
| Information technology | 1 |
| Navigation | 1 |
| Space | 3 |
| Surveying | 1 |
| United States | 1 |