| |||
direction ranging |
定向 测距 : 42 phrases in 14 subjects |
Agriculture | 2 |
Air defense | 1 |
Aviation | 5 |
Business | 1 |
Earth sciences | 4 |
Electronics | 5 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 3 |
Geophysics | 6 |
Missiles | 1 |
Navigation | 1 |
Oil / petroleum | 2 |
Space | 4 |
Technology | 6 |