 |
| heating systems: 239 phrases in 23 subjects |
| Construction | 112 |
| Earth sciences | 10 |
| Electronics | 4 |
| Energy industry | 23 |
| Environment | 14 |
| European Union | 2 |
| General | 28 |
| Industry | 2 |
| Life sciences | 2 |
| Materials science | 5 |
| Mechanic engineering | 8 |
| Metallurgy | 1 |
| Microelectronics | 1 |
| Municipal planning | 1 |
| Natural resourses and wildlife conservation | 2 |
| Natural sciences | 1 |
| Non-governmental organizations | 1 |
| Nuclear physics | 2 |
| Optics branch of physics | 1 |
| Physics | 1 |
| Programming | 1 |
| Technology | 12 |
| Transport | 5 |