luminosity brightness
亮度亮度
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Astronomers describe star brightness in terms of magnitude and luminosity.
天文学家用星等和光度来描述恒星的亮度。
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A luminosity function is the number of objects of a particular sort as a function of their luminosity or brightness in some wavelength band.
光度函数是作为某一波段的光度或亮度的函数的特定种类的天体数目。
It is similar to a Hertzsprung-Russell (HR) diagram but the latter plots luminosity (or absolute magnitude) rather than just apparent brightness and a knowledge of the distances of the stars plotted is also needed.
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