英语词汇“surface brightness”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	surface brightness
释义	surface brightness surface brightness Luminosity per unit area on the sky, usually expressed for optical data as magnitudes per square arc second. It is a useful distance-independent property to use in the comparison of low-redshift galaxies (where relativistic corrections are unimportant) because the angular area subtended and the luminosity both decrease with the inverse square of the distance.
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英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。