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- There exist different opinions about hydrocarbon generation capacity of the middle Ordovician carbonatite on the south slope of Huimin sag. 关于惠民凹陷南坡中奥陶统海相海相碳酸盐岩的生烃能力,前人有不同的认识。
- The main water source is fracture-karst water in Middle Ordovician carbonate rocks. 主要的供水水源为中奥陶统碳酸盐类岩石中的裂隙-喀斯特水。
- This paper is a continuation of the papers on lithofacies palaeogeography of the Early, Middle and Late Cambrian and the Early and Middle Ordovician. 摘要本文是笔者等的中国早、中、晚寒武世和早、中奥陶世岩相古地理诸文的继续。
- The shoal and patch reef sub-facies in territorial seawater shallowing open platform facies are developed in Middle Ordovician Yijianfang Formation. 中奥陶统一间房组沉积时期为区域性的海水变浅的开阔台地浅滩夹点礁沉积。
- The ore beds are in the Middle Ordovician limestone. It is a water abundant mine with an average drainage of 61200 m 3/d, but the unpolluted drainage has not be utilized. 矿层位于中奥陶统的石灰岩中，为一多年平均日排水量达6.;12万m3/d的大水矿山。
- Take the huge unconformity in the bottom of Middle Ordovician as the boundary,the sequences could be classified into Sauk and Tippecanoe suppersequence sets. 以中奥陶统底部的巨大不整合为界，可以划分出Sauk和Tippecanoe两个超层序组。
- The Xiangshan Group is underlain conformably by the Middle Ordovician Miboshan Group and is in turn ovelain unconformably by the Silurian,Devonian and Carboniferous. 香山群与下伏中奥陶统来钵山组关系为整合接触，不整合伏于志留系、泥盆系、石炭系之下。
- LI R H.Trace fossils and ichnofacies of Middle Ordovician Gongwusu Formation, Zhuozishan, Inner Mongolia [J].Acta Palaeontologica Sinica, 1993, 32(1): 88-104. [9]李日辉.;内蒙古桌子山地区中奥陶世公乌素组的遗迹化石及遗迹相[J]
- Sedimentary environment was broad and flat near shore littoral erosion plain,the ore is located above Majiagou Formation,Middle Ordovician Series,bedding is not well developed. 铝土矿与其围岩有较大的电性差异,特别是铝土矿与其标志层奥陶系灰岩侵蚀面的电阻率值相差较大,达数千欧姆米乃至数万欧姆米。
- The paper deals microscopically and macroscopically with the characteristics of fissure karst in the Middle Ordovician carbonate rocks in the West Mountain of Taiyuan, and with the groundwater natural resources. 本文从岩石微观上、宏观上研究了太原西山中奥陶系碳酸盐岩的裂隙岩溶特征,并就地下水天然资源作了研究。
- From the late Middle Ordovician to the end of Ordovician, the cephalopods, gastropods and corals in the Erlangping trough, and the conodonts, coral, brachiopods, cephalopods as well as trilobites in the Xichuan shelf were from the North China Province. 在中奥陶世晚期至奥陶纪末，二郎坪海槽的腹足类、头足类和珊瑚与浙川陆棚的牙形石、珊瑚、腕足类、头足类和三叶虫均属华北生物省。
- The Middle Ordovician high - quality Mn ore deposit develops in the five synsedimentary fault depressions in the central Hunan Province, whose environment is of subabyssal, anoxic and insufficient compensation. 湘中中奥陶世优质锰矿沉积于桃江成锰沉积盆地的五条同沉积断陷槽内,为次深海缺氧欠补偿沉积环境。
- Based on the geotectonic background of the southern margin of the North China platform of Middle Ordovician, the sedimentary environments and sedimentary patterns of Pingliang Formation are analyzed. 从中奥陶世华北地台南缘大地构造背景出发，分析了鄂尔多斯盆地南缘中奥陶统平凉组的沉积环境和沉积模式。
- But the geological and geochemical analyses showed that there existed a set of high quality marine source rock in the platform slope facies of Middle Ordovician Pingliang Formation. 地质和地球化学分析证实，盆地西、南缘台缘深水斜坡相的中奥陶统平凉组存在优质海相烃源岩，其形成的油气最早富集在中央古隆起及其周围；
- I'm sick of being piggy in the middle all the time. 我腻烦了总是夹在争吵双方的中间。
- He planted roses in the middle of the garden. 他在花园中间种上玫瑰。
- Characteristics of Middle Ordovician Organic Reefs in Bachu Area 巴楚地区中奥陶世生物礁造礁生物特征
- He admires the chivalry of knights in Middle Ages. 他很佩服中世纪武士的侠义精神。
- It has its roots deep in the Middle Ages. 它起源于遥远的中世纪。
- My wheel twisted off in the middle of the car race. 我的车轮子在汽车比赛中途脱掉了。
