ordovician
英
美
- n. 奥陶纪；奥陶系
- adj. 奥陶纪的
详细释义
Noun:
-
from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds
双语例句
- 1. Marine volcanics of Early Ordovician was found in Zhifang region.
- 摘要纸房地区具有早奥陶世海相火山岩存在.
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- 2. This was the result from the large - scale regression in the Late Ordovician.
- 这是晚奥陶世晚期大规模海退的结果.
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- 3. The Cambrian - Ordovician strata in Luxi Block are very continuous and well exposed.
- 鲁西地块的寒武 - 奥陶纪地层出露连续,露头较好.
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- 4. NOTES ON THE GENUS REEDOCALYMENE KOBAYASHI, 1951 ( TRILOBITA, ORDOVICIAN )
- 论奥陶纪三叶虫属ReedocalymeneKobayashi, 1951 ( 英文 )
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- 5. The Lower Ordovician in Tazhong area is dominated by marine carbonate.
- 塔里木盆地塔中地区下奥陶统主要为一套海相碳酸盐岩.
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- This was the result from the large-scale regression in the Late Ordovician.
这是奥陶纪晚期大规模海退的结果。 - Major hydrocarbon source rocks are in the Cambrian and Ordovician.
寒武-奥陶系烃源岩是该区主力烃源岩;
用作名词 (n.)
用法讲解
- Lower Ordovician 早奥陶世
- Ordovician period 奥陶纪
- Upper Ordovician 晚奥陶世
- the Ordovician 奥陶纪
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