查询词典 geologic time

Based on the analyses of the diversity of shape and structure of tarsometatarsus of living birds and its corresponding function, we can study the shape and habit of birds in the early stages, at the same time can discuss the evolutive law of functional behavior of birds in the different periods of the geologic history further too.

特别是通过对现生鸟类跗跖骨形态结构多样性与对应功能的分析，可以此作为研究早期鸟类形态习性的参考依据，同时也可进一步探讨不同地质历史时期鸟类功能行为的演化规律。

In particular it can base on the analyses of the diversity of shape and structure of tarsometatarsus of living birds and its corresponding function,to study the shape and habit of birds in the early stages,at the same time can discuss the evolutive law of functional behavior of birds in the different periods of the geologic history further too.

特别是通过对现生鸟类跗跖骨形态结构多样性与对应功能的分析，可以此作为研究早期鸟类形态习性的参考依据，同时也可进一步探讨不同地质历史时期鸟类功能行为的演化规律。

Then,two geologic models were designed,including layered model and interface undulated model,which were used to carry out post-stack reverse time migration by spectral element method on forward modeling results in anisotropic and isotropic medium.

设计了层状和界面起伏两个地质模型，分别在各向异性介质和各向同性介质条件下对正演模拟结果进行了谱元法叠后逆时偏移。

The Physical Earth; Minerals; Rocks; Internal Processes; Global Tectonics; Volcanology; Geologic Time; The Hydrosphere; Surface Processes; Astronomy and Space Science; Environment; Miscellaneous

地球；矿物；岩石；地球内部过程；全球构造；火山学；地质年代；水圈；地表过程；天文学和空间科学；环境；综合

Important spore and angiospermae pollen fossils such as Asterisporites,Cranwellia,Xinjiangpollis,Beaupreaidites and Quantonenpollenites have been obtained from the the upper part of the Member 4 of Quantou formation. They are Late Cretaceous in age. The reasonable geologic time of the upper Quantou formation may be later than Cenomanian deduced by the age of the upwards spore and angiospermae pollen fossils and the palynological assemblages.

根据泉四段顶部地层中一些具有重要时代意义的孢子和被子植物花粉化石Asterisporites，Cranwellia，Xinjiangpollis，Beaupreaidites，Quantonenpollenites等在世界各地的地史分布及与已知孢粉组合的比较，得出泉头组上部的地质时代可能不早于塞诺曼期。

When the forward and inversed computations are conducted at the same time, the distribution of hydro geologic parameters can be determined with increased accuracy of flow field study.

正演计算和反演计算同时进行，不但确定了水文地质参数分布，也大大地提高了流场研究的精度。

At the same time, the distribution mode of the strand shallow lake and the delta deposition system have been established in this region. The research on type and distribution regulation of subtle trap combining with geologic strata structure indicates that the south slope belt, ditch valley belt, Guangbei slope break and southwest of noselike conformation belt are the more advantageous belt to find subtle trap.

在层序地层格架内，通过古地貌研究和沉积体系研究，识别出低位沟谷带和坡折带等控制沉积的两种地貌，建立了本区滨浅湖沉积体系和三角洲沉积体系的分布模式，结合地层结构特点，对隐蔽圈闭类型及分布规律进行研究，指出南部斜坡带、沟谷带、广北坡折带及鼻状构造带西南端是寻找隐蔽圈闭的有利区带。

The principal contents of the symposia on stratigraphy in the 31st International Geological Congress comprise the following aspects:geologic time scale, biostratigraphy, event stratigraphy, sequence stratigraphy, magnetostratigraphy, isotopic stratigraphy, integrated stratigraphy, sedimentary facies and palaeogeography, palaeobiogeography, and tectono-palaeogeography.

介绍了第 3 1届国际地质大会有关地层学学术讨论的主要内容，包括地质年代表、生物地层学、事件地层学、层序地层学、磁性地层学、同位素地层学、综合地层学、沉积相与沉积古地理、生物古地理、构造古地理 10个方面。

The stratal slices made from the 3-D seismic volume reveal the high-resolution sediment-dispersal patterns and associated depositional systems on the relative geologic time surfaces.

地层切片技术可以在平面上显示相对同一地质沉积时间的沉积分布特征，再结合岩性测井资料可以较准确分析沉积体系。

The Shoushangou Formation(P1ss)overlaps unconformably on pre-existing strata or geologic bodies; the Dashizhai Formation(P2ds) is the product of submarine volcanic eruption at the time of a maximum marine-flooding surface; and the Zhesi Formation (P2z) is the production of deposition during shrinkage of a sea basin.

寿山沟组(P1ss)地层呈超覆不整合覆于以前地层或地质体之上；大石寨组(P2ds)为达到最大海泛面时海下火山喷发的产物；哲斯组(P2z)是海盆地萎缩期的沉积产物。

We are forbidden from giving money to these shoeless, skinny children, as this will perpetuate begging.

向光着脚，骨瘦如柴的孩子施舍是不可以的，因为要招来无休无止的乞讨。

It would be hard not to fall victim to some sharpeyed policeman.

要想不被某个目光锐利的警察抓到，谈何容易。