n. 1.【物理学】二色(性)。 2.【生物学】二色变异。 3.【医学】(红、蓝、绿三色中只能辨别二色的)二色性色盲。
a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision) 同义词：dichromacy, dichromatopsia, dichromia, dichromasy,
Dichromatism (or polychromatism) is a phenomenon where a material or solution's hue is dependent on both the concentration of the absorbing substance and the depth or thickness of the medium traversed.Kennard IG, Howell DH (1941) Types of colouring in minerals.
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