copygraph

n. 油印机

词形变化

copygraphs 复数 copygraphs

释义与例句

n.
  1. 1.

    An early means of producing multiple copies of a document by means of pressing it against a slab of gelatin softened with glycerin and making further copies from the resulting reversed image.

    过时

词源

From copy + -graph.

来源：wiktionary