Based on the colorimetry mechanism,the meaning oftrichroism is studied,as well as the synthetic and selecting principles of trichroism ofreactive and disperse dyes in particular.

本度学理说明三意义,并详细论述活性染料及散染料三的合成和筛选则。

Additive mixture ofcolortrichroism is red,green and blue,subtractive mixture,as its complementary colors,is cyan,ma genta and yellow,thatis the dyestuff trichroism.

颜的加法混和三红、绿、蓝,减法混和的三则是它们的补,即:青、品红和黄,染料的三是后者。