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Explosives and Explosive Ordnance Disposal
containing
face to face
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F-bursting occurs when explosive charges intersect or are in close proximity to major geological structures or zones of weakness in the face region
当药包与自由面区域内的主要地质结构交叉或接近软弱面时、发生自由面破裂现象
One of the greatest challenges, which a blaster faces in mining and contruction blasting, is to accurately determine the bounds of the blast safety area
爆破人员在采矿及建筑拆除爆破过程中所面临的一个最大难题、是准确算岀爆破安全区的范围
tip-to-face distance
端面距
支架顶梁前端到煤壁的距离
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