“chemical evolution of galaxies”的概念、定义、翻译、参考文献-科学参考

单词	chemical evolution of galaxies
释义	chemical evolution of galaxies Encyclopedia 理学星系释 chemical evolution of galaxies星系的化学演化星系中恒星和星际物质的元素丰度随时间的变化过程。这类研究开始于1963年M.施米特的一篇论文，该文的主要目的是要对星系中恒星和星际物质观测到的化学元素丰度给予合理的说明。此外，将观测结果同理论预言比较还可对恒星形成和演化的理论提供重要约束。
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