luminosities
英 [ˌluːmɪˈnɒsɪtiz]
美
n. (恒星等的)光度，亮度; 发光; 发亮
luminosity的复数
双语例句
- Subsequently astronomers found more and more Cepheids in different corners of the universe and discovered that there exists a simple relationship between their luminosities and light variation periods.
其后的天文学家在宇宙不同角落陆续找到其他造父变星，并发现了它们光度跟光变周期间的简单关系。 - The SAS-2 r-ray data have been employed to determine the functional relationships between the absolute y-ray luminosities Ly and the absolute optical luminosities of quasars and Seyfert galaxies. From these, their contribution to the extragalactic y-ray background have been derived.
SAS-2的Υ辐射数据，已被用来测定类星体和赛弗特星系的Υ辐射绝对光度与光学绝对光度间的函数关系，并由此导出它们对河外Υ射线背景辐射的贡献。 - After deriving their effective temperatures and luminosities from their ( B-V), ( U-B) colors and parallaxes we find their positions in the HR diagram to be mostly confined to the main sequence.
在从样本星的色指数（B-V），（U-B）和视差得到它们的有效温度和光度之后，我们发现在赫罗图上它们大多数是位于主序带内的。 - A strong anti-correlation between equivalent widths of the CIV emission lines and continuum luminosities of quasars, i. e. so called "Baldwin effect", is due to the correlation between the continuum luminosities and the ionization parameters.
类星体紫外发射线CⅣ的等值宽度与连续谱背景光度之间存在的很好的负相关性，即所谓的Baldwin效应，是连续谱光度与电离参量相关的结果。 - The spectral slopes, infrared luminosities and mass loss rates of central stars, as well as the mass loss times from infrared or radio radiation are calculated.
计算了光谱斜率和红外光度，同时从红外及射电幅射得出了中心星质量损失率及质量损失历经时间。 - Analysis of color indices and mass& luminosities ratioes OE galaxies
星系色指数和质光比的分析