The underground area is the home of the Iron Clan. 地下面积是家里的铁氏族。
Effect of horizontal stress and rock crack density on roof safety thickness of underground area 水平应力与裂隙密度对顶板安全厚度的影响
Earlier this month, a dozen clubs at Peking University lost their meeting place when the university announced plans to turn their underground area into a parking lot. 本月上旬,北京大学表示将把地下室改成停车场,因此北大十来个社团失去了他们的聚会场所。
Priority is given to drinking water source area, ecological and natural conservation area and underground water area, so as to intensify protection of water resource. 以饮用水水源地、生态和自然保护区、地下水等重要水域为重点,加强水资源保护。
Analysis of Land Destroyed Degree in Underground Mining Area 井工开采煤矿区土地破坏程度分析&以陕西某矿为例