spectroscope

and the spectroscope, chemistry.

分光镜之于化学的革命。

The spectroscope shows the center of the galaxy as a white band and the movement of stars around the core is traced by a dark vertical line.

从分光镜中可以看到，星系中心象一条白带，而星体围绕中心的旋转则描绘成一条黑色的垂直线。