 |
| |||
| upstream | |||
| a contracorriente: 21 phrases in 9 subjects |
| Chemistry | 6 |
| Coal | 3 |
| Electronics | 4 |
| Energy industry | 1 |
| Environment | 1 |
| Mechanic engineering | 3 |
| Metallurgy | 1 |
| Textile industry | 1 |
| Water resources | 1 |
|
| |||
| upstream | |||
| a contracorriente: 21 phrases in 9 subjects |
| Chemistry | 6 |
| Coal | 3 |
| Electronics | 4 |
| Energy industry | 1 |
| Environment | 1 |
| Mechanic engineering | 3 |
| Metallurgy | 1 |
| Textile industry | 1 |
| Water resources | 1 |