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| systèmes de navigation | |||
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| système de navigation | |||
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Navigation System : 125 phrases in 13 subjects |
| Astronautics | 5 |
| Aviation | 38 |
| Communications | 28 |
| General | 9 |
| Information technology | 1 |
| Law | 1 |
| Life sciences | 1 |
| Mineral products | 2 |
| Natural sciences | 3 |
| Technology | 1 |
| Telecommunications | 2 |
| Transport | 32 |
| United Nations | 2 |