绝灭

The disappearance at~10Ma of the deep dwelling planktonic foraminifer Globoquadrina dehiscens from the western Pacific including the South China Sea was about 3Ma earlier than its final extinction elsewhere.

浮游有孔虫深水种Globoquadrina dehiscens于10Ma左右从西太平洋和南海绝灭，要比其他地区早大约3Ma。

Moreover,the existence and global stability of the periodic solution of the system are also discussed when both populations coexist.

但是，两种群不可能同时绝灭，并且在两种群共存的情况下，讨论了周期解的存在性与全局渐近稳定性。

By the end of next year, they will have finished work on the new stadium. The fantastic modern buildings have been designed by Kurt Gunter.

根据古生物学家的研究，这样的场面确实在地球的历史上曾经发生过，而且至少有5次之多，被称作大绝灭。

This dependency between fossil and living types is well illustrated when we deal with extinct groups.

化石与现存类型之间的这种依赖关系在我们研究绝灭类群时是十分明显的。

Any of numerous extinct colonial marine animals chiefly of the orders Dendroidea and Graptoloidea of the late Cambrian to the early Mississippian periods, whose fossil remains are often used to date the rocks of the ''.

笔石动物许多已绝灭的殖民地海洋生物中的任何一种，主要为寒武纪晚期到密西西比纪早期的树形笔石目及笔石纲的生物，其化石残存物常用于确定志留纪和奥陶纪岩石的年代

It is proposed that the Nadi Kangri Formation volcanic rocks have potential significances in evaluating the Late Triassic biotic crisis, climate change, and regression event in the eastern Tethys.

那底岗日组火山岩可能对研究东特提斯地区的晚三叠世生物绝灭、气候变化以及海退事件有重要意义。

The Permian/Triassic mass extinction plays a great role in the evolutionary history of the Earth.

二叠-三叠纪生物绝灭事件在地史发展中有着重要作用，灭绝加速了物种的进化和更替。

Even those few humans with large heads who crossed over into the great central sun dream 42,000 years ago could not ascertain what was necessary to release the shadow dream leading to the dance of extinction upon earth.

即使那些大头颅的极少人，在42000年前跨越进入大中枢太阳时也不能确定，为了解除导致地球上绝灭舞蹈的那些阴影梦想，什么是必须要做的。

The main purpose of careful observations on external appearance and internal anatomy is to throw light on the evolution of the modem family Pinaceae:To Pinus, attention is paid to the relation of different subgenera, sections and subsections; to Pseudoaraucaria and Pityostrobus, through analysis of the extinct types, trying to clear the evolution relations among all genera so as to finish the systematic tree is of most importance. Currently there are two hypotheses, i.e. Pinus center theory and Pseudoaraucaria branch theory.

对松科化石球果进行细致的外部形态及内部结构的研究主要目的在于演化关系的探讨上：对于Pinus，主要探讨这个属内各个亚属、组、亚组之间的演化关系；对于Pityostrobus和Pseudoaraucaria，通过绝灭类型的分析，探索松科内各个类群的演化关系进而完成进化树是研究的主要方向，现在这方面已有了Pinus中心说及Pseudoaraucaria分支说两个假说。

We find the trivial equilibrium is always unstable, which implies that the system is persistent. It is shown that the system is uniformly persistent when positive equilibrium exists.

此外，我们还证明了当正平衡点存在时系统是一致持续生存的，并利用极限系统理论和杜拉克判剧研究了边界平衡点全局稳定性，这表明此时捕食者种群将绝灭。

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。

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。