estimated age of the earth, there are rock method, the evolution of fossil methods and methods of radioactive elements. According to identification, the oldest rocks on Earth, is in western Greenland found in Gott Shihab Ami Zucker gneiss region, aged about 38 billion years old. The solar system debris, all of them are in 45 million years -47 billion years. So that the members of the solar system including Earth, including the formation of most of the same period.
基于1个网页-相关网页
Sorts dried linen according to identification Numbers or type.
根据辨认号和类别分拣干布草。
According to identification of thin sections of the collected moonstones, the beauty characters and its cause are discussed in the article.
根据所藏月光石的光薄片鉴定研究，阐述了月光石的美学特征和产生原因。
According to the Pentagon, night missions include extensive ground operations, takeoffs and landings, and the visual identification of targets, all of which occur in the cover of darkness.
按照五角大楼的要求，夜间任务包括广泛的地面作战、起飞和着陆，以及黑暗笼罩下的目标的视觉辨认。
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