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Explosives and Explosive Ordnance Disposal
containing
定 向抛掷
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in specified order only
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English
定向抛掷
directional throw
定向抛掷
爆破
能将大量岩土按预定方向抛掷到要求位置,并堆积成一定形状的爆破技术
directional pin-point blasting
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