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Blue printer: One of the four printing plates in a subtractive colour process which is to be printed in cyan ink.
蓝版：减色彩印法的四张印版之一。它需用青蓝色墨印刷。
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It is the ink colour standards used in North America for process colour printing.
是北美洲所用的四色彩印油墨的标准规格。
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