For any lines in the visible region of the spectrum, identify each by its color.
For any lines in the visible region of the spectrum, identify each by its color.
通过颜色，准确判断光谱中的任何可见区域的光线。
For any lines in the visible region of the spectrum, identify each by its color.
通过颜色，准确判断光谱中的任何可见区域的光线。