underground working meaning in Chinese
地下开采
Examples
- When he was doing underground work he was arrested because a renegade informed against him .
他做地下工作时，曾因叛徒告密而被捕。 - Research on form stripping age of underground works
地下工程衬砌拆模时间研究 - Technical code for waterproofing of underground works
地下工程防水技术规范 - Mine plans ; deep mining ; underground workings
矿山测量平面图.地下采矿.巷道 - Mine plans ; deep mining ; underground workings ; comments
矿区平面图.深井开采.井下巷道.说明