horizontal hole meaning in English

水平井眼
水平炮眼

The lengths of the probes used in horizontal hole in potassium mines were up to 200m .
钾盐矿井水平巷道使用的探头长度达到200米。
Horizontal hole springing and rock breaking - out blasting
平孔药壶坍塌爆破技术
Abstract : a neutron radiography system in reactor horizontal hole of tsinghua university was introduced , and its capability of neutron radiography was evaluated by theory and experiment , the non - destructive testing for rocket fuse is successful
文摘:介绍了清华大学核研院反应堆水平孔道上的一个中子照相系统,通过理论分析和实验测定评价了它的中子照相能力,并对火箭导爆索进行了成功的检验。