index fossil

 
       
  • 标准化石
new

index fossil的英文翻译是什么意思,词典释义与在线翻译:

英英释义

Noun:
  1. a fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found

index fossil的用法和样例:

例句

  1. Thus any rock found bearing these index fossils can be dated fairly accurately as belonging to their proper period in history.
    因此凡是发现含有这类标准化石的岩石就可以相当精确地断定它们在地质史上属于某个相应时代。
  2. There is a long term debate about the depositional model of the chert sediment, as well as the definition of the Precambrian-Cambrian boundary because of few index fossils reported.
    过去对这套硅质岩的沉积模式有多种解释,而且由于生物化石的匮乏而很难确定前寒武纪-寒武纪界线的位置。
  3. The index is at the back (of the book).
    索引在(书的)末尾。
  4. Automatic modification of the index register.
    自动修改变址寄存器内容。
  5. A person's face is often an index of his mood.
    一个人的脸部表情常常反映这个人的情绪。
  6. Do you know the price index in the city?
    你知道这个城市的物价指数吗?

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