定向仪 : 98 phrases in 17 subjects |
Agriculture | 1 |
Aviation | 16 |
Drilling | 2 |
Earth sciences | 4 |
Electronics | 7 |
Explosives and Explosive Ordnance Disposal | 2 |
General | 2 |
Geophysics | 8 |
Medical appliances | 1 |
Navigation | 2 |
Oil / petroleum | 3 |
Shipbuilding | 1 |
Space | 14 |
Surgery | 2 |
Technology | 31 |
Telecommunications | 1 |
United States | 1 |