凿岩 meaning in English
[矿物学] (rock) drilling
◇凿岩锤 drilling hammer; jack hammer; 凿岩工 drillman; 凿岩机械 rock drilling machinery; 凿岩台车 drill jumbo
Examples
- Rope thread extension steel bars for rock drilling
凿岩用波形螺纹连接钎杆 - Rock drilling equipment . hollow drill steels in bar form
凿岩钎杆用中空钢 - Rock drilling equipment - hollow drill steels in bar form
凿岩钎杆用中空钢 - Optimization of drilling and blasting parameters of taochong iron mine
桃冲铁矿凿岩爆破参数优化 - Drill bits with tapered connection for percussive wet rock drilling
凿岩.冲击湿式凿岩用的锥体钻头