Abstract : This paper introduces manual distill natural gas by coal gasification in the methanol extraction of artificial , and Siemens PCS7 DCS and SIS system application in this project. Introduces the system selection, network and configuration, etc.
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This paper introduces hydraulic vibration-exciting system for marble moulding machine, and pats forward rational selection method of vibration. parameter for the system controlled by rotary valve.
本文介绍了应用于再造大理石成型机的液压激振系统，并提出了应用转间控制的系统其振动参数的合理选择方法。
The paper introduces the application of CCTV in freeway, especially introduces the structure, selection of equipment, transmission mode of the CCTV system in tunnels.
本文介绍了闭路电视在高速公路监控上的应用，重点介绍了隧道部分闭路监控系统的结构、设备选型、传输方式等。
The paper describes purpose of using hard disk broadcast system of the digital television and introduces the selection schemes of broadcast equipment in TV station.
阐述了应用数字电视技术硬盘自动播出系统的目的，介绍了电视台播控设备的选择方案。
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