绝灭
- 与 绝灭 相关的网络例句 [注:此内容来源于网络,仅供参考]
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In the Americas, 73 percent of the large plant-eaters, along with the saber-toothed cat, were gone within 1,200 years after humans migrated to the continents about 13,600 years ago.
人类在大约13,600年前移居到美洲,此后1,200年内美洲大陆上73%的大型食草动物就和剑齿虎一同绝灭。
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They not only occur in deep ocean basins such as in the central North Atlantic where they were deposited below CCD, but they extend up the continental slopes and rises, such as in the Alps, including the Gampu area , in the Carpathian Mountains (Austria, Slovakia, Poland, Romania), in Spain, in Turkey and in the Exmouth Plateau (Legs 122 and 123) in northwest Australia.The Upper Cretaceous reddish marlstones in Italy are particularly similar to the Upper Cretaceous Chuangde formation red beds in the Tibetan Himalayas. In summary, the Upper Cretaceous redbeds have several characteristic as follow:(1) very low TOC, only 0~0.3%;(2) wide distribution throughout the Neo-Tethys, from north Atlantic to the west, to Exmouth Plateau to the east;(3) Sedimentary environment of the red beds varied from oceanic basin, to slope/rise, to outer shelf. Most comment is pelagic and hemipelagic.
床得组泥灰岩〓含量0.26~5.62%,远远高于奥地利和意大利红层0.45~0.82%,并出现金属元素高含量,平均达926ppm,以高含量Ba、Cu、Zn、Cr、Ni、Th等元素为特征;2)床得组红层〓相对于定日地区同期海相碳酸盐〓整体负向偏移量达2.0‰,而在其床得组红层内部〓自下而上一直攀升,自-1.5‰~0.0‰之间上升到0.0‰~1.0‰之间;定日贡扎剖面相当于江孜床得组红层的Santonian-Campanian期,〓也出现一弱负向偏移,偏移量达-0.8‰;3)红层内锶同位素〓比值为最低值,同期定日地区也出现锶同位素低值;4)床得组部分层段的泥晶灰岩出现丰富的有孔虫,其中尤以浮游有孔虫最为繁盛,与江孜地区临近的浅海陆棚相的定日—岗巴地区此时期出现自Cenomanian-Turonian界线生物绝灭后的生物辐射期。
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The study was funded by the Natural Sciences and Engineering Research Council of Canada and The Leakey Foundation.
原猴亚目中除狐猴外,还包括眼镜猴、懒猴和一些已绝灭的类群。
- 推荐网络例句
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On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.
另一方面,更重要的是由于城市住房是一种异质性产品。
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Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.
气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。
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You rap, you know we are not so good at rapping, huh?
你唱吧,你也知道我们并不那么擅长说唱,对吧?