permian period meaning in English
二迭纪
二叠纪
二叠系
Examples
- Mafic - ultramafic rocks in permian period and minerogenitic potentialities
超镁铁岩及其成矿问题探讨 - Analysis to the deposit environment and coal forming model in permian period in yong - xia xin - qiao coal field
永夏煤田新桥井田二叠系沉积环境与聚煤规律浅析 - Analysis on lithofacies and paleogeography coal accumulation for coal measures of the carboniferous - permian period in the east of shan - mian coalfield , henan
豫西陕渑煤田东部石炭二叠纪含煤岩系岩相古地理分析 - In the permian period , 286 million years ago , the most striking transitions in the evolution of life occurred when mammals evolved from one lineage of reptiles
在二叠纪期间, 286百万年前,最醒目的转折在生活的演变发生了当哺乳动物演变了从爬行动物一后裔。 - After late of early permian period , deposits of deltas and lacus took shape extensively along with up - lifting of yimeng area in the north and marine regression of this area
早二叠世晚期以后，随着北部伊盟地区不断隆升，海水退出本区，研究区形成广泛的三角洲和湖泊沉积。