 |
| heating apparatus: 17 phrases in 10 subjects |
| Construction | 4 |
| Food industry | 1 |
| Leather | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nautical | 1 |
| Oil / petroleum | 3 |
| Refrigeration | 1 |
| Solar power | 1 |
| Technology | 2 |
| Wood processing | 2 |
|
| heating apparatus: 17 phrases in 10 subjects |
| Construction | 4 |
| Food industry | 1 |
| Leather | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nautical | 1 |
| Oil / petroleum | 3 |
| Refrigeration | 1 |
| Solar power | 1 |
| Technology | 2 |
| Wood processing | 2 |