geological era

同根派生

英汉例句

• Cainozoic) The present geological era, beginning some 65 million years ago, and divided into two periods, the Tertiary and the Quaternary.
  这个时期的特点是出现了现代的生物体，特别是哺乳动物和有花植物。
• County geological formation exposed by geological era, there are 7 lines (JI), the Sinian, Cambrian, Ordovician, Silurian, Cretaceous, Tertiary, Quaternary.
  地质县境地层出露按地质年代，有7个系（纪），即震旦系、寒武系、奥陶系、志留系、白垩系、第三系、第四系。
• It is above-reality because it covers a huge timespan, though not huge enough to exceed a geological era, for example, the current Fourth Glacial Period we’re in.
  在当今世界，政治家之间的对话在气候变化问题上实现了新的穿越。
• A stratigraphic unit, especially a unit consisting of two or more formations deposited during a single geologic era.
  地层学单位:地层学中的一个单位,尤指包括在同一地质时期沉积的两个或两个以上地层的单位。
• Study is made on palaeozoic conodont fossil from Bachu Uplift and Awati Depression. 5 conodont fossil assemblage zones are identified.And their geological history and geological eras are discussed.
  对塔里木盆地西部巴楚断隆、阿瓦提凹陷古生代产出的牙形刺化石进行了研究，建立了5个牙形刺化石组合带，讨论了其地史分布及其地质时代。