 |
| air pipe: 117 phrases in 36 subjects |
| Aerohydrodynamics | 6 |
| Armored vehicles | 1 |
| Astronautics | 3 |
| Automated equipment | 1 |
| Automobiles | 8 |
| Aviation | 4 |
| Cement | 1 |
| Combustion gas turbines | 2 |
| Construction | 12 |
| Electronics | 4 |
| Energy industry | 1 |
| Food industry | 1 |
| Forestry | 1 |
| General | 2 |
| Hydraulic engineering | 1 |
| Machine components | 2 |
| Makarov | 2 |
| Mechanic engineering | 1 |
| Metallurgy | 2 |
| Military | 3 |
| Mining | 2 |
| Missiles | 1 |
| Molikpaq | 1 |
| Nautical | 8 |
| Nuclear physics | 1 |
| Oil / petroleum | 6 |
| Oil and gas | 1 |
| Oilfields | 2 |
| Rail transport | 7 |
| Refrigeration | 2 |
| Security systems | 1 |
| Shipbuilding | 3 |
| Silicate industry | 1 |
| Technology | 17 |
| Thermal engineering | 1 |
| Transport | 5 |