 |
| |||
| carbon black; graphite; grey black | |||
| 墨灰: 15 phrases in 8 subjects |
| Animal husbandry | 3 |
| Botany | 1 |
| Chemistry | 1 |
| Desert science | 1 |
| General | 1 |
| Metallurgy | 2 |
| Technology | 1 |
| Textile industry | 5 |
|
| |||
| carbon black; graphite; grey black | |||
| 墨灰: 15 phrases in 8 subjects |
| Animal husbandry | 3 |
| Botany | 1 |
| Chemistry | 1 |
| Desert science | 1 |
| General | 1 |
| Metallurgy | 2 |
| Technology | 1 |
| Textile industry | 5 |