2002—2004年，北京印刷学院课题组完成了“毕昇活字术发明实证研究”课题。本课题的酝酿，起于上个世纪后期。
n. letterpress
misc. typographic printing
操作平压式及滚压式活版印刷机。
Sets up and operates platen and cylinder letterpress machines.
线条锌版活版印刷用的线条或粗网半色调凸版。参阅锌电版。
Zinco a line or coarse screen half-tone block etched on zinc for letterpress printing. see zinc engraving.
活版印刷术很有很多分支，今天我们收集了一些让人大开眼界的动物字母印刷术。
There are many different branches of typography. Today we have collected some Amazing Animals typography for your inspiration.
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