Sedimentary characteristics of the Lower Cretaceous strata and prediction of the favourable exploration areas in the Qingxi depression,Jiuxi Basin,Gansu是什么意思_Sedimentary characteristics of the Lower Cretaceous strata and prediction of the favourable exploration areas in the Qingxi depression,Jiuxi Basin,Gansu在线翻译_英语_读音_用法_例句