单词：average density
average density的用法和样例：
例句
- We then insert this average density into Einstein's equations for gravity and determine the averaged expansion rate of the universe.然后将平均密度带入按因斯坦重力方程来确定宇宙的平均膨胀速率。
- This effect is seen as a deviation from the uniform Hubble expansion of the galaxies and provides a measure of the mean density within the Virgo Supercluster.这作用被视为背离银河哈勃膨胀的统一而提供对室女座超星系团内平均密度的测量。
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