爆破孔 meaning in Chinese

blast hole
blasthole
shot hole
shothole

Analysis on preliminary shock pressure on borehole of air - de - coupling charging
空气不耦合装药爆破孔壁冲击压力分析
The application and effects of hole - bottom detonating in medium - length hole blasting
论中深孔爆破孔底起爆的实施和应用效果
Blasting hole drilling
爆破孔钻机
Improvement of detonation propagat ion of decked charges in a smooth blasting hole and its application
光面爆破孔内间隔装药传爆方法的改进与应用
In the light of the change of the rock mass structure and blasting conditions and the application of new explosives in lanjian iron mines pit , tests were carried out on charges loading structure , blasting hole spacing pattern parameters and blasting methods . the optimized rational blasting parameters greatly improved the blasting efficiency , which led to good economical benefits
针对兰尖铁矿采场岩体结构、爆破条件等的变化及新型炸药的使用，开展了装药结构、爆破孔网参数及爆破方法试验，优化确定了合理的爆破参数，使爆破效率大幅提高，取得了良好的经济效益。