查询词典 Cretaceous

Sauropod dinosaurs of the genus Titanosaurus, common during the Cretaceous Period especially in South America.

雷龙一种泰坦龙，食草的水陆两栖蜥脚类恐龙，在白垩纪的南美尤为常见

Any of various plant - eating,amphibious sauropod dinosaurs of the genus Titanosaurus,common during the Cretaceous Period especially in South America .

皮科克发现了南北美洲分布区重叠的两种豆科植物对同样的气候趋势有完全不同的适应策略。

Any of various plant - eating,amphibious sauropod dinosaur s of the genus Titanosaurus,common during the Cretaceous Period especially in South America.

雷龙一种泰坦龙，食草的水陆两栖蜥脚类恐龙，在白垩纪的南美尤为常见

Fossil records of Spiraea were reviewed as well and origin of Spiraea was dated back to late Cretaceous.

据分子钟推测，粉花绣线菊东西地理分支的分歧时间约为中新世阿启坦期

The Yushulin oilfield is located in eastern slope of Sanzhao seg of central sag zone in the northern part of Songliao basin. Its main oil-producing formations are Fuyu and Yangdachengzi oil layers of mesozoic group cretaceous. Its reservoir is fluvial facies sediment. Main sandstone is positive circle channel sandstone with calcium in the beneath, and microelectrode curve is box distribution function. Its secondary oil-producing formation is Yaoyi part of Putaohua oil layer. Its reservoir is delta front sediment. Main sandstone is subaquatic distributary channel sandstone, and microelectrode curve is box distribution function.

榆树林油田处于松辽盆地北部中央坳陷区三肇凹陷东部斜坡，主要产油层系是中生界白垩系泉三、四段的扶余、杨大城子油层，储层为河流相沉积，主要砂体为有底钙存在的正旋回河道砂体，微电极曲线形态为箱型；其次为姚一段的葡萄花油层，储层为三角洲内前缘沉积，主要砂体为水下分流河道砂体，微电极曲线形态为箱型。

The park preserves 600 million years of Earth history, including the interaction of supercontinent cycles that collided along the park's suture, and the red sandstone layers that include fossils of dinosaurs and giant creatures that roamed the Earth in the Jurassic and Cretaceous.

公园保存了6亿年以来的地球演化史，包括沿着公园所处的缝合带碰撞的超级大陆循环的相互关系，还有那些保存在红色砂岩内的生活在朱罗白垩纪恐龙和大型生物的化石。

It is thus concluded that Late Cretaceous salts deposited in Kashi depression of southwestem Tarim basin are close to the marine type, and the sedimentary stage is somwhat later than other regions. Therefore, Kashi depression should be regarded as a promising area in prospecting for sylvinite deposits.

应用这两个同位素新指标分析，塔里木盆地西部喀什次级构造凹陷晚白垩世盐岩沉积接近海相沉积类型，而且岩盐沉积阶段较晚，是一最有利成钾远景区。

Flintcomb-Ash being in the middle of the cretaceous tableland over which no railway had climbed as yet, it would be necessary to walk.

燧石山地处白垩质高原的中心，直到现在还没有火车通到这儿，所以她只有靠步行到那儿去。

Any of various small,mostly tailless,extinct flying reptiles of the order Pterosauria that existed during the Jurassic and Cretaceous periods.

翼手龙任一种小型已灭绝的翼龙目的飞行爬行动物，它们绝大多数都没有尾巴，生活在侏罗纪和白垩纪之间的那段时期

In this paper, 4 variables of the distal tarsometatarsus were also collected from 25 specimens of fossil birds belonging to 14 genera of Early Cretaceous birds from Western Liaoning in China. Analyses of these variables have also proven to be useful in distinguishing arboreal and terrestrial birds, and the result is generally consistent with a conclusion reached on the basis of other analysis, i.e. those based on the claw geometry and toe proportion.

通过对在中国已发现的25例中生代鸟类跗跖骨远端4个变量的统计分析，表明它们同样具有区别树栖和地栖鸟类的显著意义，而且分析的结果与参考鸟类其他特征（如爪的形态、脚趾的比例等）所得出的结论基本一致。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。