Both approaches have their pros and cons, but we believe that the XSL-FO model fits better in the Model-View-Controller architecture (MVC) architecture at the view tier.

这两种方法各有优缺点，但我们认为XSL - FO模型在视图层上更适合模型-视图-控制器(MVC)架构。

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The J2EE architecture is based on a four-tier layer model that characterizes a J2EE-compliant enterprise application.

J2EE体系结构是以一个4层模型为基础而建立的，该模型刻划了J2EE兼容的企业应用程序的特征。

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At last, the author propose a three-tier model of knowledge warehouse architecture.

最后，提出了一个三层的知识仓库体系结构模型。

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