boiler unit: 40 phrases in 14 subjects |
Astronautics | 2 |
Construction | 3 |
Ecology | 1 |
Electrical engineering | 1 |
Electronics | 1 |
Energy industry | 7 |
Makarov | 1 |
Molikpaq | 3 |
Nautical | 4 |
Production | 3 |
Sakhalin | 2 |
Solar power | 2 |
Technology | 6 |
Thermal engineering | 4 |