英语词汇“Hubble parameter”造句的方法、技巧、例句及翻译-英语例句辞典

单词	Hubble parameter
例句	Hubble parameter Since the critical density goes as the square of the Hubble constant, by doubling the Hubble parameter, the critical density would increase by a factor a four. Astronomy 2016-10-13T00:00:00Z A value called the reciprocal of the Hubble parameter is approximately equal to the age of the universe, or 13.7 billion years, he added. Q & A: Don’t Cosmologists Use a More Universal Time Unit Than Years? 2013-01-21T22:33:56Z
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