release valve: 83 phrases in 30 subjects |
Aerohydrodynamics | 2 |
Armored vehicles | 2 |
Astronautics | 4 |
Automated equipment | 1 |
Automobiles | 4 |
Construction | 5 |
Drilling | 1 |
Electrical engineering | 1 |
Energy industry | 3 |
Gas processing plants | 1 |
Hydrography | 1 |
Makarov | 3 |
Mechanic engineering | 2 |
Mechanics | 2 |
Metallurgy | 1 |
Military | 2 |
Mining | 1 |
Molikpaq | 1 |
Nautical | 1 |
Occupational health & safety | 1 |
Oil / petroleum | 3 |
Oil and gas | 3 |
Oil and gas technology | 2 |
Oilfields | 1 |
Pipelines | 1 |
Plastics | 1 |
Rail transport | 2 |
Refrigeration | 2 |
Technology | 26 |
Transport | 3 |