冲击钻孔 meaning in Chinese
jump drilling
percussion drilled hole
percussion drilling
percussive drilling
punch boring
thrust boring
Examples
- Discussed shallowly the karst area percussion drilling pile is digging in hole pile construction question processing artificially application
浅谈岩溶地区冲击钻孔桩在人工挖孔桩施工问题处理中的应用