| 单词 | distance modulus |
| 释义 | distance modulusnounastronomy a measure of the distance, r, of a celestial object too far away to show measurable parallax. It is given by m – M = 5 log(r /10), where m is its apparent magnitude (corrected for interstellar absorption) and M is its absolute magnitude Words nearby distance modulusdistal, distal myopathy, distance, distance learning, distance medley, distance modulus, distance race, distance runner, distance university, distant, distant early warning 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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