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| 井壁砌碹; 矿井支架; 矿用支架; 矿井支柱 | |||
| 矿用支柱 | |||
| 矿井支柱 (шахтное крепление) | |||
| шахтная крепь: 9 phrases in 5 subjects |
| Electronics | 1 |
| General | 2 |
| Geology | 1 |
| Mining | 4 |
| Technology | 1 |
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