传统软件开发人员通常构建应用程序中的一个模块，或典型的三层体系结构中的单个层的一部分。
Traditional software developers generally build either a module within an application or a portion of a single layer in typical three-tier architecture.
探讨了基于三层结构的应用软件的开发技术。
Development technique of application software based on three-layer structure was discussed.
一般的网络版软件采用二层结构，本文采用了客户端、中间件、服务端的三层结构来架构系统。
The general network-version software adopt two layers of structure, the thesis have adopt three layers of structure to realize the system frame.
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