英语词汇“proper motion”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	proper motion
释义	proper motion noun : the apparent change in position of a star usually expressed in seconds of arc per year that results from the projection on the celestial sphere of its motion with respect to the solar system — see tangential motion
随便看	metagnathous metagnomy metagonimus metagrabolize metagraphy metagrobolize metahalloysite metahewettite metahohmannite metai metaigneous metakamacite metakentrin metakinesis metakinetic Metal metal metal metal age metalanguage metalate metalation metalaw metal cloth metal coloring

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