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coal wall; longwall face (采矿); wall | |||
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longwall | |||
long face place |
长 工 作面 : 18 phrases in 8 subjects |
Architecture | 2 |
Automobiles | 1 |
Earth sciences | 1 |
Engineering geology | 2 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 1 |
Mining | 1 |
Technology | 9 |