It can improve gas suction effect, reduce drilling hole amount and save construction investment.
采用优化后的方法可以提高瓦斯抽放效果，减少钻孔数量从而节省施工投入。
Rescue workers are therefore drilling a hole on the north side of the mine.
因此，营救人员在矿井的北侧钻了一个洞。
Drilling is cutting a hole with a drill.
钻削就是用钻头钻一个孔。
It is especially suitable for drilling of hole with great slope Angle.
这是特别适合钻探孔与伟大的边坡角。
Drilling can not continue until the fish or the junk is recovered from the hole.
在井底脏物或落鱼未清除之前，就不能继续钻进。
The machine is drilling a hole.
这台机器正在钻孔。
French engineers are drilling a hole into the ice to pump the water away.
法国工程师正在冰层上钻洞，用泵将湖水排出。
French engineers are drilling a hole into the ice to pump the water away.
法国工程师正在冰层上钻洞，用泵将湖水排出。
应用推荐