surpression: 69 phrases in 18 subjects |
Armored vehicles | 3 |
Astronautics | 6 |
Aviation | 21 |
Chemistry | 2 |
Construction | 3 |
Energy system | 1 |
Food industry | 1 |
Hydraulic engineering | 5 |
Mechanic engineering | 1 |
Medical appliances | 4 |
Meteorology | 1 |
Oil and gas technology | 2 |
Physics | 1 |
Technology | 11 |
Trucks/Lorries | 4 |
Ventilation | 1 |
Weapons and gunsmithing | 1 |
Радиоактивное излучение | 1 |