井下作业 meaning in Chinese
downhole operation
Examples
- Study on arterial compliance of ore miners
铁矿井下作业人员动脉顺应性研究 - A review and prospect of downhole operation in tarim oilfield
塔里木油田井下作业回顾与展望 - Safety regulation of offshore oil recovery and downhole operation
浅海采油与井下作业安全规程 - Recommended practice for oil and gas well servicing and workover operations involving hydrogen sulfide
含硫化氢油气井井下作业推荐作法 - The state shall take special protective measures for miners working in underground coal mines
国家对煤矿井下作业的职工采取特殊保护措施。