 |
| échangeur de chaleur: 56 phrases in 13 subjects |
| Agriculture | 1 |
| Chemistry | 1 |
| Coal | 1 |
| Construction | 19 |
| Earth sciences | 2 |
| Electronics | 1 |
| Energy industry | 1 |
| Food industry | 1 |
| Life sciences | 2 |
| Mechanic engineering | 17 |
| Metallurgy | 2 |
| Natural resourses and wildlife conservation | 2 |
| Transport | 6 |