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- A systemic and integrated criteria is thus obtained for the Ordovician carbonates in the Tahe oilfield. 从而使塔河油田奥陶系储层有了一个比较系统、完善的划分标准。
- The Ordovician Winnipeg may have been 200 my old or older during its main oil expulsion phase. 奥陶系Winnipeg组可能已处于主要石油排出期长达200百万年或更早。
- Bryozoa was quite diversified in the Ordovician, but lacked fossil records in the Cambrian. 古生物学资料表明 ,虽然苔藓动物的大多数类群在奥陶纪已经分化出来 ,但它在寒武纪却缺乏任何化石记录。
- The Lazhuglung Formation overlies unconformably the Ordovician and Silurian strata. 发现了几个重要的不整合界面；
- Any of various large, segmented aquatic arthropods of the order Eurypterida that existed from the Ordovician Period to the Permian Period. （古生）板足鲎目的一种巨大的、有节的，属于板足鲎目的水生节肢动物，生存于奥陶纪到二叠纪时期
- It is not an isolated reservoir, but is a part of the Ordovician buried bill reservoirs in this area. 轮古东奥陶系油气藏不是孤立的油气藏，而是整个轮南古潜山油藏的一部分。
- Fractures and caverns are the main spaces of carbonate reservoirs of the Ordovician system in Tahe Oilfield. 裂缝和溶蚀孔洞是塔河油田奥陶系碳酸盐岩主要的储集空间。
- The maturity of the Ordovician crude oil in Tahe oil district is high, and is strongly affected by biodegradation. 塔河油区奥陶系原油的成熟度较高,且受生物严重降解。
- The Ordovician structure in the middle and east part of the Erdos Basin is a gently west-dipped large monocline. 鄂尔多斯盆地的中东部奥陶系今构造为一平缓的西倾大单斜。
- This method is effectively applied to simulate an oil well penetrating the Ordovician carbonate reservoir in Tahe oilfield. 应用此方法，对塔河油田奥陶系碳酸盐岩的－口油井进行了模拟，结果证实了该方法的有效性。
- The wind whirled the dead leaves about. 风吹得枯叶在四处回旋。
- In the Luquan-Wuding region of the north domain, the Ordovician is complete, and is unconformably overlain by the Devonian. 北侧的禄劝-武定一带，下古生界的沈积序列与之相反，有完整的奥陶纪沈积组合，上于泥盆系假整合，其间无志留纪的沈积。
- The wind was whispering in the trees. 一阵风穿过树林沙沙作响。
- There are 26 letters in the English alphabet. 英语字母表中有26个字母。
- Hydrocarbon in the Ordovician petroleum accumulation system originated from the Cambrian and Lower Ordovician source rocks. 塔中低凸起奥陶纪油气成藏体系的源岩为寒武系及下奥陶统烃源岩 ;
- Foreign nationals were asked to leave the country. 外国侨民被要求离开该国。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- In the Ordovician, Silurian Period, the Devonian, Carboniferous, the advent of low amphibians and ancient ancient reptiles. 在奥陶纪、志留纪、泥盆纪、石炭纪，相继出现低等鱼类、古两栖类和古爬行类动物。
- A country must have the will to repel any invader. 一个国家得有决心击退任何入侵者。
- Swimming is the best way to tone up your body. 游泳是健体强身的最好方法。
