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单词 optical double star
释义

optical double star


noun

two stars that appear close together when viewed through a telescope but are not physically associated and are often separated by a great distanceCompare binary star

Words nearby optical double star

optical computer, optical crown, optical density, optical disc, optical disk, optical double star, optical effects, optical fiber, optical fibre, optical flint, optical glass
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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更新时间:2024/12/26 0:27:54