This advanced feature is helpful when you need to simultaneously plot to lines whose ranges are of different orders of magnitude, or have different units.
当您需要同时绘制范围为不同量级或具有不同单位的线时，此高级功能非常有帮助。
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。
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。
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