一个完整的MK系统代号包含光谱类型和光度型两部分——例如，太阳属于G 2 V类恒星。
A complete MK designation includes both spectral type and luminosity class -for instance, the sun is a G2V.
本文合成了四支x -型1,8萘酰亚胺类活性荧光染料，并对它们的光谱及染料性能进行了研究。
Four X-reactive fluorescent dyes of 1, 8-naphthalimide were synthesized. Their spectrophotometric and dyeing properties were studied.
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