| 单词 | polar sequence |
| 释义 | polar sequencenounastronomy a series of stars in the vicinity of the N celestial pole whose accurately determined magnitudes serve as the standard for visual and photographic magnitudes of stars Words nearby polar sequencePolaroid, polar opposition, polar orbit, polar outbreak, Polar Regions, polar sequence, polar star, polar stratospheric cloud, polar vortex, polar wander, Polatsk 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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