“universal deceleration parameter”的概念、定义、翻译、参考文献-科学参考

单词	universal deceleration parameter
释义	universal deceleration parameter Encyclopedia 理学宇宙膨胀释 universal deceleration parameter宇宙密度参数现在时刻（）宇宙中物质的平均密度与宇宙临界密度的比值，记为无量纲的宇宙密度参量。
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