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一、稳态真空系统分析真空系统设计方法的基本目标是为了建立工作压力与系统排气量的关系。我们利用双对数直角坐标系表示压力与排气量的关系,如图1所示。在坐标图上,恒定的抽速是45°的斜线。附加因素对系统性能的影响,早在1954年 Lawrance 就列图说明了;次年、Santeler 介绍了“真空工程图”——给出了一个复杂真空系统的完整设计方法的详细图解。这种方法对
First, the steady-state vacuum system analysis The basic goal of the vacuum system design method is to establish the relationship between working pressure and the system displacement. We use the double logarithmic rectangular coordinate system to represent the relationship between pressure and displacement, as shown in Figure 1. On the graph, the constant pumping speed is a 45 ° slash. The effects of additional factors on system performance were illustrated by Lawrance as early as 1954; the following year Santeler introduced “Vacuum Drawings” - giving a detailed illustration of a complete design methodology for a complex vacuum system. This method is right