英语词汇“velocity dispersion”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	velocity dispersion
释义	velocity dispersion velocity dispersion A measure of the spread of velocities of members within a cluster of galaxies or of stars. If both radius, R , and velocity dispersion, V , of a cluster are measured, an estimate of mass, V ²R /G , is obtained. velocity dispersion [və′läs·əd·ē di′spər·zhən] (physics) The root-mean-square value of the magnitudes of the random velocities of particles about their mean velocity.
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