文中提出了一个基于对象的工作流活动定义，在此基础上引入了ECA规则，作为对象消息通信的基础，提出了一种新的基于对象和ECA规则的工作流模型。
A definition of workflow activities based on object is proposed in this paper. Based on object, ECA rules are introduced, which act as the basic of communications of object messages.
例如，你可以编写代码来告知那些通信对象将通过NMR被用于与您的组件交换消息。
For example, you can write code that tells which communication objects will be used to exchange messages with your component via the NMR.
DOM3 事件模型提供了生成和处理事件消息的标准方法，这有助于在对象之间进行更好的通信和交互。
The DOM3 event model gives you a standard way of generating and handling event messages, which helps in better communication and interaction between objects.
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