Watermark: A design pressed into the wet paper during papermaking by the dandy roll to indicate quality and provide a means to guard against counterfeit in case of security printing. The watermark is visible when a sheet of paper is help up to the light.是什么意思_Watermark: A design pressed into the wet paper during papermaking by the dandy roll to indicate quality and provide a means to guard against counterfeit in case of security printing. The watermark is visible when a sheet of paper is help up to the light.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句