井筒: 268 phrases in 18 subjects |
Agriculture | 1 |
Architecture | 1 |
Bridge construction | 2 |
Drilling | 26 |
Earth sciences | 2 |
Electronics | 1 |
Engineering geology | 8 |
Explosives and Explosive Ordnance Disposal | 4 |
General | 7 |
Geophysics | 6 |
Hydroelectric power stations | 2 |
Mechanics | 1 |
Mining | 12 |
Nautical | 2 |
Navigation | 1 |
Oil / petroleum | 76 |
Rail transport | 1 |
Technology | 115 |