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炮孔爆破
expl. hole firing
炮孔爆破将炸药装在炮孔内进行爆破的方法,分为浅孔爆破和深孔爆破
expl. hole blasting
炮 孔爆破
: 60 phrases in 3 subjects
Explosives and Explosive Ordnance Disposal54
General1
Technology5