Dandy roll: A cylinder of wire gauze in the paper making machine that comes into contact with the paper while it is still wet .The dandy impresses the watermark and the laid lines into its surface when required .是什么意思_Dandy roll: A cylinder of wire gauze in the paper making machine that comes into contact with the paper while it is still wet .The dandy impresses the watermark and the laid lines into its surface when required .在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句