When evaluating color proof,it needs to establish a color difference threshold first,the CIE 1976 L*a*b* color difference formula being widely used in color print quality evaluation.是什么意思_When evaluating color proof,it needs to establish a color difference threshold first,the CIE 1976 L*a*b* color difference formula being widely used in color print quality evaluation.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句