geological era
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。