古

Artiodactyla generally divided into:(1) Ancient cloven-hoofed also known as sub-orders of ancient teeth, including the Eocene and Oligocene Some of the early cloven-hoofed, they already have two of the talus trochlear surface.

偶蹄目一般分为：（1）古偶蹄类或称古齿亚目，包括始新世和渐新世的一些早期偶蹄类，它们的距骨已具有两个滑车面。

On the basis of quantitative lithofacies palaeogeography of the Cambrian and Ordovician in South China,t.

以基础地质学尤其是以定量岩相古地理学研究为基础，以生油气古地理环境为中心或前提，开展油气勘探工作，海相地层的油气勘探有可能有所突破。

The coring was successfully operated on the winter ice-cover of the lake in 2000 and the pioneer practice of the ""off-the-ice"" coring proves to be very useful and economic for taking quality cores from lakes in northern China.A multidisciplinary investigation has been carried out on core HQH4, one of the three 11-m-long cores. Results from previous investigation include lithostratigraphy, radiocarbon dating, paleoecology of Ostracoda, stable isotopic record of ostracod shells, total nitrogen and organic carbon, C/N ratio, 81 C of organic matter etc.

在对深度为11米的HQH4岩芯开展了~(14)C年代学、岩性地层学、介形类古生态及介壳稳定同位素、有机碳和总氮及C/N比值、有机碳同位素等多学科综合分析测试和研究工作的基础上，本硕士学位论文研究侧重开展了：1HQH4岩芯烧失量(Loss-on-ignition)的系统分析测定及该地层学变量的古湖泊和环境变化意义的研究；2沉水植物川蔓藻化石种子生态学特征及其在黄旗海湖泊水位重建和气候变化研究方面的重要意义的研究。

It seems that Palaeozoic tiny Chondrites can be formed in shallowest and middle tierings.

指出Chondrites的阶层分布和对古氧相的示踪在古生代与中生代有重要差别。

The Palaeozoic complexes on the northern margin of the Ergun block may be regarded as the main provenance of the basin.

盆地南侧的额尔古纳地块北缘古生代杂岩可能是盆地的主要物源。

So the Late Palaeozoic group in NE China has tremendous potential for oil and gas resources, and should be an important new area for deep hydrocarbon exploration.

鉴于晚古生界潜在的烃源岩发育和叠合盆地特点，东北地区晚古生界具有巨大的油气资源潜力，应成为深部油气资源勘探的重要新层系。

The paleobiology of ancient mammals.

古动物学中研究古哺乳动物的分支。

It introduces all kinds of links about articles and websites for Paleontology, Palynology, Paleobotany, Paleoclimatology, and Geoscientists.

它介绍了各类关于古生物学、孢粉学、古植物学、古气候学和地球学家的学术文章和网站。

Mathematic model is studied to describe unstable water injection development for Middle East Paleocene reservoir with characteristics of pressure sensitivity and high difference of formation-saturation pressures.

为了定量研究具有压敏特点的中东地区古新世高地饱压差油藏不稳定注水开发的数学模型，通过静水力学方法和单轴实验的方法，对中东地区古新世岩心渗透率随围压变化的规律进行实验研究；结合黑油模型的假设条件，推导了此类油藏不稳定注水渗流的全新数学模型。

Therefore,lacustrine deposit can only exist in the low section of the early Paleocene,and its upper section has been in brackish water and salt water environment' Coarse s...

因此湖相沉积可能仅存在于下古新统下部，下古新统上部可能已进入半咸水及至咸水的环境。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。