与事件模型一致，事件资源负责以一个它所决定的频率异步传送事件消息。
Consistent with the event model, the event source is responsible for asynchronous delivery of event messages on a frequency that it determines.
事件的负载(payload)承载着在发送小部件和接收小部件之间传送的消息，如图1所示。
The payload of an event carries messages that are sent between the sending widget and the receiving widget, as shown in Figure 1.
本文介绍的基于异步消息的框架将使用一个消息总线，该总线利用事件通道将源于Ajax的消息传送给业务服务。
The asynchronous message-based framework covered in this article USES a message bus that transmits Ajax-originated messages to business services by means of event channels.
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