trichromatic vision; a trichromatic printing process; trichromatic staining is the staining of tissue samples differentially in three colors; tricolor plumage; a tricolor process in photography.

• 三色视觉；三色印刷过程；三色染色法就是为薄绢样本染上三种不同的颜色；三色羽毛；摄影学的三色冲洗。