本文主要介绍了变频器在国产单双色单张纸平版印刷机改造中的应用，以及对变频器的一些功能的要求。
The paper introduces the application of inverter in the reform of homemade single - double-color singleton paper lithography machine, followed with some functional demands for inverter.
组装光学元件套件和方法，光学元件，平版印刷机和器件制造法。
Assembling optical element external member and method, optical element, offset press, device manufacturing method.
准备及操作卷筒给纸式柯式平版印刷机包括印报章用的柯式轮转印刷机。
Sets up and operates web-fed offset printing machines including newspaper printing machines.
在印刷包装业对各种印刷设备的需求中，量大面广的印刷设备是单张纸平版印刷机、卷筒纸平版印刷机、卷筒纸凹版印刷机和柔性版印刷机。
The sheet feed press, web offset press, web gravure press and flexographic press are the most widely used in printing newspapers, magazines, books, advertisements and packaging papers.
设置和操作凸版、平版、柔版、凹版、报纸、既时、数字和胶版印刷机。
PRINTERS set up and operate letterpress, lithographic, flexographic, gravure, newspaper, instant, digital and offset printing presses.
企业主要产品包括：轮转号码机，平版号码机、CODE39型条形号码机、自动号码机、金属编号机等系列。
The main products of enterprise include: Rotary numbering machine. Flat type numbering machine, CODE39 bar numbering machine, automatic numbering machine, metal serial number plane etc. Series.
企业主要产品包括：轮转号码机，平版号码机、CODE39型条形号码机、自动号码机、金属编号机等系列。
The main products of enterprise include: Rotary numbering machine. Flat type numbering machine, CODE39 bar numbering machine, automatic numbering machine, metal serial number plane etc. Series.
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