 |
| gás de combustão: 15 phrases in 6 subjects |
| Chemistry | 1 |
| Ecology | 1 |
| Energy industry | 1 |
| Environment | 10 |
| Mechanic engineering | 1 |
| Transport | 1 |
|
| gás de combustão: 15 phrases in 6 subjects |
| Chemistry | 1 |
| Ecology | 1 |
| Energy industry | 1 |
| Environment | 10 |
| Mechanic engineering | 1 |
| Transport | 1 |