The example we will use is quite simple, but in the process we will get to examine the variousqualities of services available.
我们将使用的示例十分简单,但在这个过程中我们也会检查各种可用的服务质量。
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Models are used in many ways: to predict system qualities, reason about specific properties when aspects of the system are changed, and communicate key system characteristics to various stakeholders.