photomechanical reproduction meaning in English

图像制版

Graphic arts and photography - color prints , transparencies and photomechanical reproductions - viewing conditions
书画和摄影.彩色照片,透明软片和照相制版.观察条件
Lewis carroll . halftone photomechanical reproduction of photograph . ( no date found on item . ) location : biographical file reproduction number : lc - usz62 - 70064 . ( image courtesy of the library of congress
路易士.卡洛尔的照片,以网版照相技术翻印. (日期不详)地点:传记档案复制号码: lc - usz62 - 70064 . (图片由国会图书馆提供)
Lewis carroll . halftone photomechanical reproduction of photograph . ( no date found on item . ) location : biographical file reproduction number : lc - usz62 - 70064 . ( image courtesy of the library of congress
路易士.卡洛尔的照片,以网版照相技术翻印. (日期不详)地点:传记文件复制号码: lc - usz62 - 70064 . (图片由国会图书馆提供)
In photomechanical reproduction , a line screen breaks the wide tonal range found in the original into discrete intervals from 1 % to 99 % ) , creating a halftone dot pattern
中义在制版照相的复制过程中，用线状的平网将原稿的浓度?围分解为1 %到99 %的不连续区段，并产生半色调的网点花纹。半色调的网点值是以百分比( % )来描述。