backflow : 44 phrases in 19 subjects |
Aerohydrodynamics | 2 |
Architecture | 1 |
Astronautics | 9 |
Chromatography | 1 |
Combustion gas turbines | 1 |
Construction | 3 |
Ecology | 4 |
Electrical engineering | 1 |
Electronics | 1 |
Energy industry | 1 |
Makarov | 1 |
Medical | 2 |
Oil / petroleum | 1 |
Oil and gas | 1 |
Oil and gas technology | 1 |
Sakhalin R | 1 |
Technology | 8 |
Tengiz | 4 |
Well control | 1 |