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Explosives and Explosive Ordnance Disposal
containing
破 碎 物
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安全爆破距离是指抛掷的碎片不会越出预定的范围、对周围人和物不造成伤害的最小距离
A safe blasting distance is the minimum distance beyond which the throw of fragments does not affect the surroundings significantly
爆破产生的气体会沿着炮孔将孔口周边的堵塞物和/或碎块抛出
Blast gases can vent up along the blasthole to launch stemming material and/ or fragments from the collar region
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