Incunabula

古版本

The term incunabula signifies all books that were produced in the infancy of printing. The terminal date is 1500, about fifty years after the German printer Johann Gutenberg invented movable printing type.

古版本指的是公元1500年（德国的约翰·谷登堡发明活字印刷术50年以后）前，印刷术处于初始阶段时印制的所有书籍。