1·These animals were not as sensitive to climate changes in the Cretaceous period as they are today.
这些动物在白垩纪对气候变化不像今天这样敏感。
2·This change in plankton found in marine deposits is what marks the boundary between the Cretaceous and the Tertiary.
海洋沉积物中浮游生物的这种变化标志着白垩纪和第三纪的分界线。
3·Fifty-seven feet long and up to nine tons, spinosaurus started poking his head around the early Cretaceous some 100 million years ago.
57英尺长，9吨重，棘龙在大约1亿年前的白垩纪早期就开始四处活动。
4·The late Cretaceous extinction of the dinosaurs and ammonoids was just one of the more drastic in a whole series of such recurrent extinction episodes.
在这一系列周期性物种灭绝事件里，白垩纪晚期恐龙和菊石的灭绝仅仅是其中一个比较严重的事件。
5·Data from diverse sources, including geochemical evidence preserved in seafloor sediments, indicate that the Late Cretaceous climate was milder than today's.
来自不同来源的数据，包括存留在海底沉积物中的地球化学依据，表明晚白垩纪的气候比如今的要温和。
1·The paper discusses the strata significance of the Cretaceous Ostracoda fossil distribution and the relationship between the flourish and decline of Ostracoda with Magnetostratigraphy.
本文论述了松辽盆地白垩系介形类化石分布的地层意义和介形类化石的盛衰与磁性地层的关系。
2·The Cretaceous low resistivity reservoir in Junggar basin is characterized by high porosity, high permeability, low salinity of formation water, low formation pressure and low resistivity.
准噶尔盆地白垩系油气藏具有孔隙度、渗透率高，地层水矿化度、压力系数和电阻率低等低电阻率油气藏的基本特征。
3·Groundwater system of Cretaceous system of Ordos basin in terms of system of water-bearing stratum of groundwater was divided and analysesed.
从地下水含水层系统的角度对鄂尔多斯盆地白垩系地下水系统进行了划分和分析。
4·Cretaceous sandstone, the main aquifer in Ardos plateau, plays an important role in supplying industry and agriculture using water and inhabitant drinking-water.
白垩系砂岩是鄂尔多斯高原的主要含水介质，对区内工农业、居民用水具有的重要的作用。
5·Structure uplifting in Late Cretaceous made present reservoir pressure be normal-abnormal low.
晚白垩系构造抬升降压，使得现今储层为正常—低异常压力。