Characters of Mesozoic Stratum in GongPo Spring Basin and Analyses about the Uranium Mine Condition of the Type of Sandstone of Beishan in Ganshu是什么意思_Characters of Mesozoic Stratum in GongPo Spring Basin and Analyses about the Uranium Mine Condition of the Type of Sandstone of Beishan in Ganshu在线翻译_英语_读音_用法_例句