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- Within the seven coal forming periods restricted to from Late Carboniferous to early Late Permian,there are seven coal groups and more than 20 seams defined in the whole area,of which seams B 3,D 2and G 7 1 are economically important. 全区自晚石炭世至晚二叠世早期所限定的7个成煤期内,共圈出煤组7个,煤层20层以上,以B3,D2,G71煤层最具工业价值。
- coal forming period 聚煤期
- Savagery was the formative period of the human race. 蒙昧阶段是人类的形成阶段。
- By the coal facies analysis,an evidence is provided for the coal forming environment in Yilli Basin. 通过煤相分析,为伊犁盆地成煤环境的研究提供了佐证。
- Transgressive coal forming and coal forming under event are the essential features of Late Palaeozoic coal accumulation in Ordos basin. 海侵成煤和事件成煤是鄂尔多斯盆地晚古生代煤聚积的基本特色。
- Determining forming period of restrained seal action of undercompacted concentration caprock by using interval travel time data and its research meaning. 利用声波时差资料研究欠压实浓度盖层抑制封闭作用形成时期及其研究意义
- In addition, the paleogeography deposition environment during the coal forming can serve as an index for selecting coalbed gas areas to explore and mine. 另外,在煤层气勘探开发选区时,成煤期的沉积古地理环境可作为一个考虑因素。
- Then, about ten thousand years ago, when this immensely long formative period of hunting for food, they became farmers. 后来,大约一万年前,经过漫长的为获取食物而狩猎的初始阶段之后,他们成了农民。
- Puppies which have been kept clean during their formative period should be easy to housebreak. 在成长期注意保持幼犬的整洁会让他们更容易养成正确的室内卫生习惯。
- H.G.Creel.The Birth of China: A Study of the Formative Period of Chinese Civilization.New York, 1954. 这是一位著名学者所做的通俗的、但文笔优美的历史叙述,稍微有点过时。
- Yugoslavia would then be able to speak with a united voice in the councils of the Allies during this formative period when so much is in flux. 在这种情况下,南斯拉夫才能用一致的声音,在这种变化多端的草创时期,在盟国的会议上发表意见。
- Consequently, to understand the reason for forming periodic algal bloom, is necessary for improving water quality in this reservoir. 所以对于新山水库,必须了解形成藻华现象的原因,方能采取适当措施,预防优养问题发生。
- In the past few years, we have also taken a peek at their infancy, but the study of these Lilliputian bodies is itself in its formative period. 过去几年里,我们已经观察到它们的婴儿期,但对这些极小型天体的研究还处于形成阶段。
- The Ch"in and Han dynasty, as the formative period of Chinese traditional ideology and culture, is a key stage of the ancient ecological culture. 秦汉时期作为我国传统思想文化的总结定型期正是古代生态文化形成的关键阶段。
- Dai Jinxing, Zhong Ningning, Liu Dehan, Xia Xinyu, Yang Jianye and Tang Dazhen.1997.The Geological Base and Main Controlling Factors on the Large and Medium Coal Formed Gas Field.Beijing: Geological Publ.House. 戴金星;钟宁宁;刘德汉;夏新宇;杨建业;汤达祯.;1997
- Wind velocity,wind direction and temperature during the pollen formative period emerges as the most influential factors.In addition,relative humidity and distribut... 大气花粉浓度的时空分布受风速、风向和温度等气象因素以及植物开花季节和种类的影响较大。
- Sartre and Aron began their 50-year acquaintance with a shared elite French education that included a formative period in Germany just before the rise of Nazism. 萨特和阿隆相知相识50年,早年都接受法国的精英教育,都在纳粹思想出现以前的德国留学。
- We need to replenish our stocks of coal. 我们需要再次补充煤的储备。
- Despite often cataclysmic disasters during its formative period, China pursued ambitious innovations in all aspects of its society, from philosophy to economics. 尽管在形成时期,巨大灾难频仍,从哲学到经济学,中国在其社会的各个方面从事着的雄心勃勃的发明。
- She piled on more coal before the fire go out. 在火熄灭之前她又加上些煤。