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| диагональный очистной забой | |||
| диагональный забой | |||
| наклонный очистной забой | |||
| наклонный забой | |||
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倾斜 工作 面 : 6 phrases in 3 subjects |
| General | 2 |
| Geology | 2 |
| Mining | 2 |
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