延深 meaning in English
deepening
depth extent
Examples
- Connecting survey of the deepening of blind service shaft
盲副井延深的贯通测量 - Talking about dahebian coal mine developing plan for level
标高开拓延深方案 - New way of deepening skip loading chamber construction in shaft
立井延深箕斗装载硐室施工新途径 - The new development of extending a deep in the exploitation of coal mine
煤矿开拓延深方式的新发展