Results for « 哈勃常数 » (cmn)
13590598-n
哈勃常数, 哈勃 常数
Hubble's constant, Hubble constant, Hubble's parameter, Hubble parameter
     [in cosmology] the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today
 

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