Duplicating machines

（重定向自Duplicating machine）

A James Watt & Co. copying press, in Thinktank, Birmingham Science Museum.

Iron letter copying press, late 19th century, Germany

1918 illustration of a mimeograph machine.

Duplicating machines were the predecessors of modern document-reproduction technology. They have now been replaced by digital duplicators, scanners, laser printers and photocopiers, but for many years they were the primary means of reproducing documents for limited-run distribution.

单词	Duplicating machine
释义	Duplicating machine 英语例句库 You can quickly roll off some extra copies of the exercise on the duplicating machine. 你可以在复印机上很快再复印几份练习题。原声例句历年英语六级听力真题（含译文） We don't know the answer, because studies done on how reliable this machine is have not yet been duplicated. 我们不知道答案，因为关于此机器如何可靠的研究还不能重复。英语百科 Duplicating machines （重定向自Duplicating machine） Duplicating machines were the predecessors of modern document-reproduction technology. They have now been replaced by digital duplicators, scanners, laser printers and photocopiers, but for many years they were the primary means of reproducing documents for limited-run distribution.
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