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position fixing
| navigation system
- only individual words found
| position fixing | |
| transp. | determinación de la situación |
| navigation systems | |
| patents. | sistemas de navegación |
| |||
| determinación de la situación | |||
|
position fixing : 5 phrases in 4 subjects |
| Communications | 2 |
| General | 1 |
| Industry | 1 |
| Measuring instruments | 1 |