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	income income income account income basis income bond incomeless incomer income splitting income statement income tax incoming incommensurability incommensurable incommensurably incommensurate in commercio incommiscible in commission incommodate incommodation incommode incommodious incommodiously incommodiousness incommodity

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