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precambrian中文是什么意思

  • adj.
    【地质学;地理学】前寒武纪的。
    n.
    〔the Precambrian 〕 前寒武纪。

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  • 例句与用法
  • On precambrian framework and evolution of the qinling belt
    一种海沟向洋后退的残余弧后盆地演化模式
  • The precambrian strata of jilin province
    吉林省前寒武纪地层
  • Geochemical characteristics of precambrian metamorphic rocks in north wuyi region
    北武夷地区前寒武系变质岩地球化学特征
  • Precambrian tectonic deformation and its evolution in ludong orogenic belt china
    中国鲁东造山带前寒武纪构造变形及其演化
  • Tectonic framework of north china block and its cratonization in the early precambrian
    华北陆块基底构造格局及早期大陆克拉通化过程
  • Early precambrian basement and metallogenetic series in eastern heilongjiang province
    黑龙江省东部早前寒武纪基底及矿床成矿系列划分
  • Among them the precambrian and cenozoic eras are the main metallogenic epoches in the world
    就全球而言,前寒武纪和新生代是金矿的重要成矿期。
  • History and current status of study on stromatolitic nomenclature and classification in the precambrian
    前寒武纪叠层石命名和分类的研究历史及现状
  • Chemical fossils ( e . g . alkanes and porphyrins ) are often the only evidence for life in rocks of precambrian age
    化学化石(烷烃和卟啉)是前寒武纪地层中生命存在的唯一证据。
  • The first three eons , which together lasted nearly 4 billion years , are grouped into a unit called the precambrian
    第一三永世,一起持续几乎4十亿年,被编组入单位称全寒武纪。
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  • 百科解释
The Precambrian (Pre-Cambrian) is the name which describes the large span of time in Earth's history before the current Phanerozoic Eon, and is a Supereon divided into several eons of the geologic time scale. It spans from the formation of Earth about 4570 Ma (million years) ago to the beginning of the Cambrian Period, about Ma, when macroscopic hard-shelled animals first appeared in abundance.
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