英语词汇“spiral arm”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	spiral arm
释义	spiral arm in American English noun Astronomy any of the elongated and curved spiral sections that are connected to the center of a spiral galaxy Word origin [1910–15] Examples of 'spiral arm' in a sentence spiral arm In fact this is not one galaxy, as a small companion lies at the end of an extended spiral arm. Times, Sunday Times (2011) Gravitational interactions between the two triggered the star formation that makes the spiral arms so prominent. Times, Sunday Times (2011) The composite picture shows symmetrical spiral arms dotted with clusters of young, blue stars radiating from a central nucleus. Times, Sunday Times (2007)
随便看	jane doe jane-doe undershirted undershoot undershorts undershot undershrub underside under siege undersign undersigned undersize undersized underskinker underskirt undersky undersleeve underslung undersoil undersold under-someones-roof under-someones-thumb undersong underspend underspending

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spiral arm in American English