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台阶爆破
expl. belt blast; blasting in benches
tech. bench blasting
台阶爆破在露天采场台阶上进行爆破的方法
expl. belt blasting
台阶 爆破
: 29 phrases in 3 subjects
Explosives and Explosive Ordnance Disposal23
Hydroelectric power stations1
Technology5