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单词 crater counting
释义
crater counting

Astronomy
  • The counting of impact craters of various size ranges within a given area or geological unit of a planetary surface, in order to determine its age. The older a given feature, the more impacts will have struck it. On the Moon, for example, the densely cratered highlands are clearly much older than the sparsely cratered maria.


Geology and Earth Sciences
  • See crater density studies.


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