discharge outlet: 20 phrases in 13 subjects |
Armored vehicles | 1 |
Astronautics | 1 |
Construction | 2 |
Drilling | 1 |
Ecology | 2 |
Electronics | 1 |
Energy industry | 1 |
Firefighting and fire-control systems | 1 |
Makarov | 2 |
Oil / petroleum | 1 |
Sakhalin R | 1 |
Technology | 5 |
Water resources | 1 |