The invention of modern xerography has made our work much easier 现代复印术的发明让我们的工作轻松多了。
2.
Reproduction includes any form of publication or copying of the whole or part of any picture , altered or not , whether by printing , photography , slide projection whether or not to an audience , xerography , artist s reference , artist s illustration , layout or presentation , electronic or mechanical reproduction or storage by any other means 复制一词，应包括任何图片不论有否改动亦然或其部分的任何出版或复印形式，不论印刷拍照幻灯片放映不论是否向观众放映亦然影印艺评介绍艺术示范布局或说明电子或机械方式复制或以任何其他方式储存等
3.
In the first chapter of the dissertation , we review the development history and the trend of xerography technology , present a series of organic semiconductive materials and their device structures , and bring forward three ways to prepare single - layered photoconductor with high performance by dimixing , preparing nanomaterials , and synthesizing new organic electron transport materials 论文第一章首先评述了电子照相技术的发展历史和发展趋势，同时介绍了有机光电导材料的种类和光电导体的结构，提出可通过复合、纳米化和研制新型的电子传输材料三种手段来制备高性能有机单层光电导体。
