英语词汇“galactic year”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	galactic year
释义	galactic year Astron. the duration of a complete rotation of the Milky Way, approximately 200 million years.
随便看	Directory Assistance direct positive direct primary direct product directress directrix direct sum direct tax direct-vision prism direct-vision spectroscope Diredawa direful diremption dire wolf direxit dirge dirham dirhem dirhinous Dirichlet dirigible dirigo diriment diriment impediment dirk

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