The hertzsprung - russell diagram serves this purpose . it is a plot of absolute magnitude against surface temperature i . e . , spectral type of stars.

简单来说，赫罗图把大量恒星的绝对星等和表面温度或谱型关系以图表方式显示出来。

youdao

Take off heat, and add salt and vanilla. Cool to room temperature. (I like to put it in the freezer for about 20 minutes.)

关火，加入盐和香草。放凉。(我喜欢放到冰箱里20分钟。)

youdao

Take off heat, and add salt and vanilla. Cool to room temperature. (I like to put it in the freezer for about 20 minutes.)

关火，加入盐和香草。放凉。(我喜欢放到冰箱里20分钟。)

youdao