Silurian

音标发音

• 英式音标 [saɪˈlʊə.ri.ən]
• 美式音标 [sɪˈlʊr.i.ən]
• 英式发音
• 美式发音

基本解释

• n. [地质] 志留纪；希留利亚纪
• adj. 志留纪的；希留利亚纪的

同根派生

• Silurian相关词

英汉例句

双语例句

• But as the ecosystem recovered after the freeze, it expanded, with land plants becoming common over the course of the Silurian period.
  但在冰封之后，随着生态系统的复原，其范围也随之扩大，其结果是在Silurian期陆生植物变得更为普遍。
• The third largest extinction in Earth's history, the Ordovician-Silurian mass extinction had two peak dying times separated by hundreds of thousands of years.
  作为地球史上消亡物种排行第三的大灭绝，奥陶系-志留纪大灭绝有两个死亡高峰期，其中相隔数十万年时间。
• The earliest of the Big Five, the end-Ordovician or Ordovician-Silurian extinction events some 444 million years ago, are reckoned by many to be the second largest.
  五次大灭绝中发生最早的一次是奥陶纪末期或者奥陶纪-志留纪大灭绝事件，发生在大约4亿4千4百万年前。 许多科学家估计这次规模是五次当中第二大的。

• Silurian更多例句

词组短语

短语

• ordovician silurian 奥陶纪志留纪
• Silurian Pediod 志留纪
• Silurian corals 葛治洲
• the silurian 志留纪
• pre silurian 志留纪前的

• Silurian更多词组

英英字典

剑桥英英字典

• from or referring to the period of time between about 445 and 420 million years ago, in which fish with jaws (= mouth bones) and some plants and small animals on land first appeared

柯林斯英英字典

• of, denoting, or formed in the third period of the Palaeozoic era, between the Ordovician and Devonian periods, which lasted for 25 million years, during which fishes first appeared 2500
• the Silurian period or rock system

• Silurian剑桥字典
• Silurian柯林斯字典

专业释义

地球科学

• 志留系

  The Silurian was mainly medium sand, fine sand, siltstone and pelitic siltstone in shallow sea.
  志留系沉积以滨浅海的中细砂岩、粉砂岩及泥质粉砂岩为主。

• 志留纪

能源科学技术

• 志留系

  Acidizing treatments in TaZhong(TZ)12 Silurian sandstone formation had achieved little effect and should be improved for inadequate understanding on the damage and inappropriate acid system.
  塔中(TZ)12油田志留系砂岩储层在以往酸化改造现场实践中，由于对储层伤害认识不够深入，酸液类型和配方针对性不强，酸化有效率和增产率有待进一步提高。

• 志留纪