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| беспламенный уголь; кларен | |||
| антрацит | |||
| антрацитовый уголь | |||
| 无烟 煤: 58 phrases in 8 subjects |
| Cement | 1 |
| Electronics | 7 |
| General | 25 |
| Geology | 7 |
| Mineral processing | 1 |
| Oil / petroleum | 2 |
| Oil processing plants | 1 |
| Technology | 14 |
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