...下二叠统;乌达;内蒙古;中国 [gap=769]eris Sun & Deng, Parasphenopteris orientalis Sun & Deng, new genus, new species, Lower Permian, Wuda, Nei Mongol, China.
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... Lower Pennsylvanian 早宾夕伐尼亚世 Lower Permian Series 下二叠统 Lower Permian 早二叠世 ...
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·2,447,543篇论文数据，部分数据来源于NoteExpress
石炭系气藏的直接盖层是下二叠统梁山组泥岩层。
The Liangshang Formation mudstone is the direct cap rock of the Carboniferous gas pools.
鄂北下二叠统含气层段沉积相划分及古地理演化。
Sedimentary facies division and paleogeographic evolution of gas-bearing intervals in lower Permian in northern Ordos basin.
塔巴庙地区下二叠统是多砂层复合叠加连片，大面积含气的层位。
The Lower Permian at Tabamiao region is a large area gas-bearing formation consisting of many sandbeds interconnected and superposed.
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