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direction finding |
方向定位 : 24 phrases in 12 subjects |
Air defense | 3 |
Aviation | 2 |
Cartography | 1 |
Computer numerical control | 1 |
Drilling | 1 |
Earth sciences | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
Geophysics | 2 |
Navigation | 1 |
Oil / petroleum | 1 |
Space | 5 |
Technology | 5 |