空气管 : 194 phrases in 15 subjects |
Aviation | 8 |
Drilling | 1 |
Ecology | 1 |
Electronics | 8 |
Environment | 1 |
General | 52 |
Jet engines | 1 |
Military | 8 |
Nautical | 1 |
Oil / petroleum | 2 |
Oil and gas | 6 |
Oil processing plants | 9 |
Oilfields | 1 |
Technology | 94 |
Water supply | 1 |