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bank shooting; bench blasting; bench shooting; belt shooting | |||
bank blasting | |||
blasting benches; heading blast; heading blasting | |||
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belt cut blasting | |||
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bench blasting |
梯段 爆破 : 5 phrases in 3 subjects |
Explosives and Explosive Ordnance Disposal | 1 |
Hydroelectric power stations | 1 |
Technology | 3 |