This article introduces the structure of steam jetting vacuum system's CAD software, mainly talks about the method of its optimum design, parameter graph and automatic assembly.
该文介绍了水蒸汽喷射式真空泵CAD软件的体系结构，着重论述了喷射式真空泵参数优化、参数化绘图及两维零件图自动装配的实现方法。
This article introduces the structure of CAD software on steam jetting vacuum pump. Emphasis is given to its optimum design, parameter graph and automatic assembly.
介绍了水蒸汽喷射式真空泵CAD软件的体系结构，着重论述了喷射式真空泵参数优化、参数化绘图及两维零件图自动装配的实现方法。
Thispaper describes the functions and internal structure of this graph software system. Themain technology is discussed in detail.
本文描述了此图形软件系统的功能及其内部结构，详细论述了主要技术处理过程。
The system model and software structure is introduced. At the same time, a new rail signal graph showing means used of the database technology is put forward.
给出了系统模型和软件实现方法，并提出利用数据库技术快速显示铁路信号图形。
The system model and software structure is introduced. At the same time, a new rail signal graph showing means used of the database technology is put forward.
给出了系统模型和软件实现方法，并提出利用数据库技术快速显示铁路信号图形。
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