The hollow-through DTH hammer drilling techniques with whole hole reverse circulation is adopted, it is proved that this technique can resolve drilling.
贯通式潜孔锤反循环钻进技术是一种先进的钻探方法，适用于复杂地层中的地质勘探以及各类钻孔工程。
The hollow-through DTH hammer drilling techniques with whole hole reverse circulation is adopted, it is proved that this technique can resolve drilling.
贯通式潜孔锤反循环钻进技术是一种先进的钻探方法，适用于复杂地层中的地质勘探以及各类钻孔工程。
应用推荐