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词汇 achromatic
词根词缀
Online Etymology Dictionary
词根李平武蒋争

achromatic
adj.
1766, from Latinized form of Greek akhromatos "colorless," from a-, privative prefix (see a-(3)), + khromat-, comb. form of khroma "color" (see chroma) + -ic.

〔李〕[a-;chromat;-ica.] a.非彩色的,消色差的 ←chrom,chromat (GK chroma)=colour 色
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