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| 瓦斯工业 | |||
| 天然气工业; 煤气工业天然气工业; 煤气工业 | |||
| газовая промышленность: 27 phrases in 5 subjects |
| Education | 1 |
| General | 22 |
| Name of organization | 2 |
| Oil and gas | 1 |
| Oilfields | 1 |
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