| |||
| ★ 圆-圆导航系统 | |||
|
range-range navigation system : 36 phrases in 10 subjects |
| Air defense | 5 |
| Aviation | 5 |
| Earth sciences | 3 |
| Electronics | 3 |
| General | 1 |
| Geophysics | 2 |
| Oil / petroleum | 2 |
| Shipbuilding | 6 |
| Space | 2 |
| Technology | 7 |
| |||
| ★ 圆-圆导航系统 | |||
|
range-range navigation system : 36 phrases in 10 subjects |
| Air defense | 5 |
| Aviation | 5 |
| Earth sciences | 3 |
| Electronics | 3 |
| General | 1 |
| Geophysics | 2 |
| Oil / petroleum | 2 |
| Shipbuilding | 6 |
| Space | 2 |
| Technology | 7 |