为了确定液压泵的高效率工作区域，需要做出其工作特性图，传统的作法需要大量的测试数据。

In order to ascertain the high efficiency working area, it needs to draw its work character figure, traditionally, it must have a great number of testing data.

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所有内容都来自于工作说明，我们得到特性列表和用例图，分解问题，然后选择一个用例开始迭代。

All from a statement of work, we can derive the feature list and use case diagrams, break up the problem, and then pick a use case to start to iterate.

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图8显示出所有这些工作的结果(注意，此图中的一些特性没有出现在原始的PO方案中：这些将在后面介绍)。

Figure 8 shows the result of all this hard work (note that there are some features in this diagram not present in the original PO schema: these will be introduced later).

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