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| пропласток угля; тонкий нерабочий пласт угля | |||
| пропласток | |||
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煤 线 : 18 phrases in 6 subjects |
| Construction | 4 |
| General | 6 |
| Medical | 1 |
| Oil processing plants | 2 |
| Rail transport | 1 |
| Technology | 4 |
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