However, to show the overall sequence of events in a visual form, let us look at the flow chart which shows the coordinated flow of events which we have envisaged in a typical DBO project.

然而，用视觉形式来演示活动发生的顺序，让我们来看看流程图，该流程图展示了我们在典型DBO项目遭遇到活动流程的坐标。

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Compared to conventional software design based on flow chart, the protection software is developed based on relay function module, which leads to the separation of time sequence and logic.

该方法摒弃了传统的基于流程图的设计思路，将软件的时序与逻辑分离，模块性好，结构清晰，软件的开发、维护方便。

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