heat efficiency: 20 phrases in 12 subjects |
Biotechnology | 1 |
Building materials | 1 |
Chemistry | 2 |
Construction | 1 |
Electrical engineering | 1 |
Energy industry | 3 |
Metallurgy | 1 |
Oil / petroleum | 1 |
Refrigeration | 3 |
Sakhalin | 1 |
Technology | 3 |
Thermal engineering | 2 |