Proterozoic

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英 [ˌprɔtərəˈzəuik]
美 [ˌprɑtərəˈzoɪk, ˌprotə-]
是什么意思
  • n.& adj.

    原生代(的);

  • 英英释义

    Proterozoic

    • n.from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms

      同义词:Proterozoic eonProterozoic aeon

    • adj.formed in the later of two divisions of the Precambrian era

      "proterozoic life forms"

    学习怎么用

    词组短语

    proterozoic era元古代;原生代

    双语例句

    用作名词(n.)
    1. Early Proterozoic high-pressure metamorphism in the Wutaishan.
      五台山早元古代高压变质作用研究。
    2. Wangjiawaizi gold deposit occurrs in Lower Proterozoic opimetamorphic rock series.
      王家崴子金矿床赋存于辽南古元古代浅变质岩系中。
    用作形容词(adj.)
    1. Boron deposits of eastern Liaoning occur in a suite of Early Proterozoic metamorphic rocks, with boron orebodies existent in magnesian marble.
      辽东硼矿床产于早元古代的一套变质岩内,硼矿体赋存于镁质大理岩中。

    权威例句

    Eukaryotic Organisms in Proterozoic Oceans
    Late Proterozoic Low-Latitude Global Glaciation: The Snowball Earth
    Eumetazoan Fossils in Terminal Proterozoic Phosphorites?
    Microbial Mats in Terminal Proterozoic Siliciclastics: Ediacaran Death Masks
    Late Proterozoic rise in atmospheric oxygen concentration inferred from phylogenetic and sulphur-isotope studies
    Geological characteristics and tectonic setting of proterozoic iron oxide (CuUAuREE) deposits
    Calcified metazoans in thrombolite-stromatolite reefs of the terminal Proterozoic Nama Group, Namibia
    Macroscopic Carbonaceous Compressions in a Terminal Proterozoic Shale: A Systematic Reassessment of the Miaohe Biota, South China
    Neodymium isotopes in the Colorado Front Range and crust|[ndash]|mantle evolution in the Proterozoic
    Origin of the Eumetazoa: Testing ecological predictions of molecular clocks against the Proterozoic fossil record
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