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- Carboniferous period, the early gymnosperms (such as etc.) is very impressive, but the number of ferns most abundant. 石炭纪时，早期的裸子植物（如苏铁、松柏、银杏等）非常引人注目，但蕨类植物的数量最为丰富。
- With rapid burial in a moist anoxic environment, such as the coal swamps of the Carboniferous period, carbonaceaous films of plant material like fern fronds may survive. 迅速埋藏于潮湿的缺氧环境下，正如媒在石炭纪沉没，类似蕨类植物的含碳植物材料即可能存活下来。
- The Carboniferous Period. 石炭纪，石炭系
- In the Carboniferous Period, 360 million years ago, the greatest evolutionary innovations were the amniotic egg which allowed early reptiles to move away from waterside habitats and colonize dry regions. 在石炭纪期间,360百万年前,最巨大的演变创新是允许早期的爬行动物从海滨栖所行动和拓殖干燥地区的羊膜蛋。
- While from west to northeast the average values of 87 Sr / 86 Sr are increasing in plane,indi cating that the marine transgression during the Carboniferous period happened in direction from west toward east. 平面上由西向东北方向87Sr/86Sr比值增大,说明石炭纪海侵是由西向东侵入的。
- The lamellibranchiiiata fossils and coral fossils of Upper Carboniferous period had been discoveried in the detrital rock and carbonafite rock by the geologic survey of the area of Yishenjilike mountain. 摘要通过对伊什基里克山特克斯达坂一带地质调查，首次于该区发现了一套含晚石炭世双壳、珊瑚、腕足及植物化石的碎屑岩。
- There are great bifurcations as yet on the structural environment and on the evolution of the Xingmeng Paleozoic orogenic belt in Southeast Inner Mongolia during the Carboniferous Period. 内蒙古东南部古生代造山带在石炭纪时期的构造环境和构造演化,至今在认识上存在较大的分歧。
- Keywords tobelite;claystone;modes of presense;genesis;Carboniferous period;Permian period; 铵云母;粘土岩;赋存形式;成因;石炭纪;二叠纪;
- Keywords clayrocks;I/S interstratified minerals;volcanic ash;genesis;Carboniferous Period Permian Period.; 粘土岩;I／S间层矿物;火山灰;成因;石炭纪;二叠纪;
- carbonized vegetable matter deposited in the Carboniferous period. 在石炭层沉淀的碳化的植物物质。
- In the period of Carboniferous and Early Permian, vocanic activity was strong with high geotemperature. 中三叠世时托克逊地区与科牙依地区为同一湖盆,科牙依地区为生烃中心,发育优质烃源岩;
- That period was a bright page in the history of Chinese literature. 那个时期是中国文学史上光辉的一页。
- Let us hope that the period of this injustice will be over soon. 让我们希望这个不公正的时期很快结束吧。
- Carboniferous and Permian foraminifera occur extensively in the Chinling Range. 正>秦岭-昆仑构造带横贯东西,是我国三大巨型纬向构造带之一。
- Childhood is a period of rapid growth. 幼年是生长迅速的时期。
- He consulted the chronicles of the period. 他参考了这一时期的编年史。
- BURIAL CEMENTATION IN CARBONATE POROSITY EVOLUTION OF CARBONIFEROUS PERIOD IN THE EAST OF SICHUAN PROVINCE 川东石炭系碳酸盐岩孔隙演化中的埋藏胶结作用
- Selection and Evaluation for the Mining Methods of High and Extra-highSeam of Carboniferous Period in Datong Coal Field 大同煤田石炭系厚及特厚煤层采煤方法的选择
- He had to decide within a given period. 他得在一定时间内作出决定。
- She has a detailed knowledge of this period. 她对这段时期的情况了解地相当详细。
