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- Of or relating to geologic periods that precede the appearance of life. 无生的生命出现之前的地质时期的或与生命出现之前的地质时期有关的
- The lake shore sandy dike in the shrinking process of "Hetao ancient lake" in the geologic period, which is suffered from the wind force function "rises right on the sandy land", is the substantial basis of the formation of Maowusu sandy land. 摘要地质历史时期“河套古湖”退缩残留的湖滨沙堤受风力作用“就地起沙”，是毛乌素沙地形成的物质基础。
- By means of the distributions of relatively low oil potential area on the top of Ordovician,Carbonferous and Triassic System during several geologic periods,i... 据此，结合油源、储层分布等特点，分析了油气运移和聚集条件，并指出了有利聚集区。
- Archean is the most important geological period in which the iron ore resources formed occupies 79.87% of the total. 太古宙是区内最重要的地质时期;该时期形成铁矿资源储量占总资源储量79.;87%25;广泛分布在各古老结晶基底的变质岩系内。
- For human’s greatness, a new geological period has been inaugurated: human period. 人类的伟大之处，在于他开创了一个新的地质年代：人类纪。
- Ganoid fishes swarmed during the earlier geological periods. 硬鳞鱼在更早的地质时期数量巨大。
- A series of discoveries and studies on ancient life forms in the 20th century demonstrated that Cambrian was a geological period full of the wildest imagination. 20世纪古生物的一系列发现和研究，证明了寒武纪是一个最能激发人们想象力的地质时代。
- That period was a bright page in the history of Chinese literature. 那个时期是中国文学史上光辉的一页。
- Let us hope that the period of this injustice will be over soon. 让我们希望这个不公正的时期很快结束吧。
- Childhood is a period of rapid growth. 幼年是生长迅速的时期。
- Rock salt , or halite, is mined from natural deposits formed by the shrinking of seas during geological periods. 岩盐或岩盐，被开采自然沉淀在地质学的期间。
- He consulted the chronicles of the period. 他参考了这一时期的编年史。
- How many geological periods are represented in your area? 5 points each, maximum 50 points. 在本公园内有多少个地质时代?每个5分,最大值为50分。
- He had to decide within a given period. 他得在一定时间内作出决定。
- She has a detailed knowledge of this period. 她对这段时期的情况了解地相当详细。
- Such variations in properties further indicate the complexity of the formation processes and evolution of the lithosphere over long geological periods. 性质和结构的差异体现了岩石圈形成和长期演化过程的复杂性。
- In that period auto sales hit a14-year low. 这时期汽车销售量达到14年来最低水平。
- In this period, unemployment reaches record levels. 这段时间的失业人数又达到了创纪录水平。
- Which period of history are you studying? 你正在学哪一段历史？
- A hiatus is the total interval of geologic time. 一个沉积间断是地质时间的总间隔。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
