- 凿岩: drilling
- 工作: work; operation; working; op ...
- 凿岩工: drifter; drill man; machine driller
- 接杆凿岩工具: extension drill steel equipment
- 凿岩: [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
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