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| position fixing navigation system | |||
| 定位导航 系统: 48 phrases in 14 subjects |
| Air defense | 2 |
| Automobiles | 2 |
| Aviation | 10 |
| Cartography | 1 |
| Communications | 2 |
| Earth sciences | 4 |
| Electronics | 5 |
| Information technology | 1 |
| Nautical | 3 |
| Navigation | 1 |
| Oil / petroleum | 1 |
| Space | 8 |
| Technology | 5 |
| United States | 3 |