光球层 photosphere
- 太阳大气则由光球层、色球层、过渡区和日冕组成。
The solar atmosphere above that consists of the photosphere, chromosphere, a transition region and the corona. - 太阳的外层大气称为日冕,那里的温度比光球层(即我们所看到的太阳表面)的温度要高好几百度。
The Sun's outer atmosphere is called the corona and it is several hundreds of times hotter than the photosphere, or the visible surface of the star. - 一颗恒星其生命的绝大部分处于主序星阶段,在这一阶段它包含一个核心、辐射区和对流区、光球层、色球层和日冕。
A star during most of its life is a main-sequence star, which consists of a core, radiative and convective zones, a photosphere, a chromosphere and a corona.
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