duplicating

1.You can quickly roll off some extra copies of the exercise on the duplicating machine.

你可以在复印机很快再复印几份练习题。

2.Culture of 5 ％ ;writes office to use paper (hectograph paper, book writes paper, electrostatic duplicating paper, computer to print paper, glazed paper to wait) 110 thousand tons, occupy life of 5 ％ ;

文化书写办公纸(胶版纸、书写纸、静电复印纸、电脑打印纸、有光纸等)11万吨,占5％;