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线形钻孔控制爆破初始阶段采用的模式。在开挖边线上钻凿一排密集的小直径平行孔〈即线形孔〉,并不装药,作为一个人工弱面，然后在其内侧〈人工弱面和自由面之间〉进行钻孔装药的爆破方法
expl. line drilling
线形钻孔
: 3 phrases in 1 subject
Explosives and Explosive Ordnance Disposal3

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