UML 1 . x语言对于为类建模功能强大，这些关系包括面向对象的关系，例如联系、附属、组合、聚合与泛化。
The UML 1.x language is powerful for modeling how classes relate in terms of object-oriented relations such as associations, dependencies, compositions, aggregations and generalizations.
虽然进行面向对象分析与设计的工具众多，但统一建模语言uml具有自身的强大优势，在仿真领域有着广阔的应用前景。
Although there are many tools used in object-oriented analysis and design, UML has a broad application future in simulation field because of its powerful advantages.
研究了CAD零件信息与数字化装配系统的信息转换方法，采用面向对象技术实现了产品的装配建模。
Information transformation technology from CAD system to digital assembly system was studied, and the product assembly model was built by using object-oriented method.
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