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单词 hierarchical method
释义
hierarchical method

Geology and Earth Sciences
  • 1. The classification of organisms or units into a graded succession or hierarchy.

    2. In stratigraphy, the practice of defining stratigraphic units in terms of their rank within a hierarchy and the units of lower rank which they comprise. For example, the geologic systems are composed of series, which are themselves composed of stages. Compare typological method.


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