Object diagrams allow you to model the instances of your classes (as objects) in a class diagram in order to describe the behaviour of a system.

对象图允许我们为类图中的类实例（也就是对象）建模，用来描述系统活动。

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Thirdly, we build the systematic model with static structure and dynamic behaviour by using UML to make Object-Oriented Analyze of the producing cost controlling and managing system in SIGMA.

第三，运用UML统一建模语言，建立具有静态结构和动态行为的系统模型，对星玛电梯生产成本控制管理系统进行面向对象的分析。

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