N a method of making reproductions of a coloured picture, usually by using four halftone plates for different coloured inks 制版印刷
It is used in four-colour process printing.
是四色彩印所用的颜色。
Magenta: One of the subtractive primary colours. It is used in four-colour process printing. Also referred to as process red.
洋红：减法原色之一。是四色彩印所用的颜色。亦称四色红。
Water-soluble inks: inks in which the pigments are soluble in water. used in screen process printing printing from rubber plates and in gravure.
水溶性墨：墨内颜料可溶于水者。应用于四色网印，橡胶版和凹版印刷。
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