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- Paper has systematic summarized the characters of the Tertiary coal bearing strata of N.E.China Region,genetic types of coal,lithotype of coal,metamorphism and its rules. 系统总结了东北地区第三纪含煤地层特征、煤的成因类型、煤岩特征、变质作用及其规律。
- The Study on Coal Bearing Strata of Lower Cretaceous in Yangcaogou Basin of Jilin Province and the Accumulation Rules of Coal 吉林省羊草沟盆地下白垩统含煤地层与聚煤规律研究
- The authors comprehensively analyzed the geological background and the epositional characteristics of the Late Permian coal bearing strata in Laochang coalfield,eastern Yunnan. 通过对滇东老厂煤田形成的地质背景和晚二叠世含煤地层沉积特征的综合分析,剖析了典型的潮坪聚煤环境和三角洲聚煤环境及其成煤作用。
- The paper introduces the sedimentary environment of coal and coal?bearing strata,the properties of coal seams and the causes resulted in the variation of seam thickness in laung mining district,Kalimantan Tengah,Indonesia. ? 介绍了印尼中加里曼丹拉翁煤矿区煤和含煤岩系的沉积环境、煤层特征以及引起煤厚变化的原因。
- THE COAL BEARING STRATA IN BARAPUKURIA,BANGLADESH 孟加拉国巴拉普库利亚含煤地层
- The average age of the boys in this class is fifteen. 本班男生的平均年龄是十五岁。
- The age of Coal Series and its overlying Red Beds of Yunnan and szechuan has been aconflicting problem for almost half a century. 正>一、前言四川与云南中生代红层与煤系的时代问题,是长期间争论的问题。
- I don't think he looks his age of seventy. 我感到他看起来不像70岁的人。
- The age of majority is eighteen. 成年的法定年龄是18岁。
- We need to replenish our stocks of coal. 我们需要再次补充煤的储备。
- He ran away from home at the age of thirteen. 他十三岁那年就离家出走了。
- Keywords paleogeography;regional structure;coalbed methane;Longtan coal bearing strata; 古地理学;区域构造;煤层气;龙潭煤系;
- At the age of thirty, Mary began to lose colour. 玛丽在30岁的年纪就红颜渐逝了。
- Prohibition was laid on the export of coal. 禁止煤炭输出。
- She was orphaned at the age of ten. 她在十岁时成为孤儿。
- My father retired at the age of 60. 我父亲六十岁时退休了。
- He put a shovel of coal on to the fire. 他往火炉里加了一铲煤。
- My grandmother got married at the age of seventeen. 我的祖母十七岁就结婚了。
- We had a big delivery of coal today. 今天我们收到大批订购的煤。
- He was already balding at the age of 25. 他25岁就秃顶了。