穿孔过程中自身不回转的非开挖气动锤包括冲击矛、夯管锤和爆管锤。
The trenchless pneumatic hammers which don t rotate themselves during drilling include impact moles, pipe ramming hammers and pipe bursting hammers.
在水文水井中，气动潜孔锤钻进仍可发挥它高效率、高速度的作用。
The air-driven down-hole hammer drilling is still very effective and speedy in well drilling in karst limestone area.
以上计算和分析的结果，对气动潜孔锤短钻柱系统优化设计和钻井工艺的采用具有实际应用价值。
The optimum design of DTH drilling system and the adoption of drilling technology can be developed based on the data and result.
以上计算和分析的结果，对气动潜孔锤短钻柱系统优化设计和钻井工艺的采用具有实际应用价值。
The optimum design of DTH drilling system and the adoption of drilling technology can be developed based on the data and result.
应用推荐