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Terms for subject Explosives and Explosive Ordnance Disposal containing Drill and | all forms | in specified order only
| English | Chinese |
| drill data acquisition and computer simulation technology | 获取钻孔数据及计算机模拟技术 |
| spacing determined by experience and trial, and again depends on the drill hole diameter | 确定炮孔间距一是靠经验和试验、二是由钻孔直径来定 |
| spiral drill-and-blast concept in drifting | 平巷掘进中螺旋形钻孔爆破法一种平巷掘进方法,其炮孔径向于平巷中心分排钻出，每排炮孔的深度相继提高。当一排炮孔爆破时，清除出一饼状岩块。若总面积分成16块,且每循环下沉1.6m,则每炮孔排各增加深度0.1m。需采用专门机械来屏蔽爆炸区与钻孔和装药区 |