对机械桁架进行了基于结构分析意义上的单元定义 ,对各类单元进行了特征属性的提取 ,并完成了用于描述各类单元的特征属性数据结构的构造。最后 ,采用先进的面向对象技术 ,利用VisualC ++5.0开发环境 ,开发出一种新型的平面机械桁架结构分析系统 The mechanical truss was defined based on the unit analysis of structural analysis, the characteristic attributes of all kinds of units were extracted, and the construction of the characteristic attribute data structure for describing all kinds of units was completed. Finally, the use of advanced object-oriented technology, the use of VisualC + + 5.0 development environment, developed a new planar mechanical truss structure analysis system