寒武纪基本解释

汉语拼音:hán wǔ jì

1.地质年代古生代的第一个纪。"寒武"(cambria)是英国威尔士一个古代地名,这个纪的地层首先在那里发现,故名。约开始于五亿七千万年前,结束于五亿年前。本纪分为早﹑中﹑晩三个世。生物群以海生无脊椎动物为主,特别是三叶虫§藻﹑绿藻等开始繁盛。我国南北很多省区当时为海水所淹没。这一时期形成的地层叫"寒武系"。

寒武纪详细解释

  1. 地质年代古生代的第一个纪。“寒武”(Cambria)是 英国 威尔士 一个古代地名,这个纪的地层首先在那里发现,故名。约开始于五亿七千万年前,结束于五亿年前。本纪分为早、中、晚三个世。生物群以海生无脊椎动物为主,特别是三叶虫。红藻、绿藻等开始繁盛。我国南北很多省区当时为海水所淹没。这一时期形成的地层叫“寒武系”。

寒武纪双语翻译,寒武纪在线翻译例句

  • This rapid origin and diversification of animals is often referred to as "the Cambrian explosion"

    如此迅速的动物起源和多样化被认为是“寒武纪大爆发”。

  • "Plumes" from deep mantle do not operate in the modern Earth and did not operate in Precambrian time.

    来自地幔深处的“热柱”,在现代地球上并无发生,其实,自寒武纪之后就不再发生。

  • For quite some time Cambrian remained just a scientific term concerned only by evolutionism scholars and paleontologists.

    长期以来寒武纪仅仅是演化论学者和古生物学家所关心的科学名词。

  • The beginning of the Cambrian era saw a widespread arrival of multi-cellular organisms, particularly in the form of sponges.

    寒武纪时代的初期看了多细胞性的有机体普遍到来,特别以海绵的形式。

  • 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。

  • This realization provided a big incentive for paleontologists to get out in the field and find fossils older than the Cambrian.

    这项体认刺激了古生物学家走入田野,寻找比寒武纪更古老的化石。

  • As a result of rapid transgression in the Early Cambrian, a sequence of excellent source rock was widely developed in the Lower Cambrian.

    寒武系,特别是下寒武统,由于寒武纪初期的快速海侵作用而在研究区域普遍发育烃源岩系;

  • A third fossil formation containing boths oft-bodied and hard-bodied animals provides evidence of the result of the Cambrian explosion.

    第三种化石层既包含了软体动物也包含了硬体动物,它为寒武纪大爆发提供了证据。

  • ONE of the greatest mysteries of the history of life is the Cambrian explosion.

    寒武纪的大爆炸是生命史中最大的谜团之一。