 |
| |||
| carbon black; flame black; petroleum black; acetylene black; gas black | |||
| soot; black | |||
| noir de carbone: 21 phrases in 6 subjects |
| Chemistry | 5 |
| Energy industry | 1 |
| Environment | 1 |
| Industry | 2 |
| Resins | 3 |
| Technology | 9 |
|
| |||
| carbon black; flame black; petroleum black; acetylene black; gas black | |||
| soot; black | |||
| noir de carbone: 21 phrases in 6 subjects |
| Chemistry | 5 |
| Energy industry | 1 |
| Environment | 1 |
| Industry | 2 |
| Resins | 3 |
| Technology | 9 |