air-duct : 243 phrases in 37 subjects |
Aerohydrodynamics | 7 |
Agriculture | 1 |
Astronautics | 7 |
Automobiles | 6 |
Aviation | 31 |
Building materials | 1 |
Cement | 2 |
Construction | 38 |
Ecology | 1 |
Electronics | 6 |
Energy industry | 15 |
Engines | 1 |
Firefighting and fire-control systems | 1 |
Food industry | 1 |
General | 7 |
Gold mining | 1 |
Makarov | 5 |
Metallurgy | 4 |
Military | 3 |
Mining | 1 |
Molikpaq | 1 |
Nanotechnology | 4 |
Nautical | 3 |
Nuclear and fusion power | 1 |
Oil / petroleum | 2 |
Oilfields | 1 |
Plumbing | 1 |
Public utilities | 1 |
Rail transport | 3 |
Refrigeration | 30 |
Road works | 1 |
Sakhalin | 2 |
Technology | 36 |
Tengiz | 2 |
Thermal engineering | 10 |
Transport | 2 |
Ventilation | 4 |