白垩纪是什么意思_白垩纪用英语怎么说_白垩纪的翻译_白垩纪翻译成_白垩纪的中文意思_白垩纪怎么读,白垩纪的读音,白垩纪的用法,白垩纪的例句

Only in the tropics were numerous late Cretaceous groups extinguished during peaks in their evolution.

只是热带地区才有大批晚白垩纪生物类群正值其演化的极盛时期突然消亡.

辞典例句

The Cretaceous extinction was like a terrible streak of bad luck lasting millions of years.

白垩纪的生物绝灭,犹如一场持续千百万年的可怕厄运.

辞典例句

The story takes place 6500 years ago in the Cretaceous period.

故事发生在6500万年前的白垩纪晚期.

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Jurassic Biostratigraphic Sequence in the Middle of Northern Tibet.

辽西地区白垩纪火山岩层序探讨.

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So the researchers resorted to some techniques out of a Cretaceous CSI.

所以科学家只能借助于《犯罪现场调查:白垩纪篇》用到的技术.

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From the view of stratigraphy, they all belong to the Cretaceous period.

从地层学上看, 它们都属于白垩纪.

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An image feet of live mainly in Jurassic and cretaceous.

蜥脚形类主要生活在侏罗纪和白垩纪.

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Chagan Depression is a rift subsidence basin, which has developed cretaceous hydrocarbon.

查干凹陷为一白垩纪断陷湖盆, 发育白垩纪含油气系统.

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The prototype of Zhoukou Cretaceous basin should be of foredeep basin.

白垩纪周口盆地的盆地原型应是山前凹陷盆地.

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The last dicynodont: An Australian Cretaceous relict.

白垩纪的最后的二齿兽[论文摘要]!

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Such grains have been reported in several end Cretaceous impact sites around the world as well.

这种颗粒在其他好几个白垩纪末期遗址也发现过.

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Albertosaurus lived 76 to 74 million years ago. That time was called the late Cretaceous period.

阿尔贝塔龙生活在7400万~7600万年前, 这个时期是白垩纪晚期.

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This clam fossil is from the Cretaceous Period, approximately 100 million years ago.

这个蛤化石来自大约一亿年以前的白垩纪时期.

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The bones date from the Late Cretaceous epoch, about 85 million years ago.

骨骼化石的年代可追溯到白垩纪时代晚期, 距今约8.5亿年.

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Stratigraphic resolution of late Cretaceous sediments is limited to around 1 00, 000 years at best.

白垩纪末沉积物的地层分辨率最好只能达到10万年左右.

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