延深的英文

例句与用法

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1. Connecting survey of the deepening of blind service shaft
   盲副井延深的贯通测量
2. Talking about dahebian coal mine developing plan for level
   标高开拓延深方案
3. 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
4. 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