As a result, a mapping change can be felt as far as the presentation tier.

因此，变更映射能够在表示层觉察到。

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The presentation tier (not the focus of this article) USES the Struts framework.

表示层(并非本文的重点)使用Struts框架。

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These services create a model that the presentation tier consumes to create a view to send to a client.

这些服务创建一个模型，表示层利用此模型来创建一个发送到客户机的视图。

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