The application servers in n-tier architecture host remotely accessible business components. These are accessed by the presentation layer web server over the network using native protocols.
N级结构中的应用服务器负责提供可远程访问的业务逻辑组件，而表现层网页服务器则使用本网协议通过网络访问这些组件。
Cloud computing is made up of a variety of layered elements, starting at the most basic physical layer of storage and server infrastructure and working up through the application and network layers.
云计算是由多种分层的要素组成，从最基本的物理层存储和服务器基础架构开始，以及应用层和网络层。
User through a set-top box accesses the server in order to receive HD enhanced layer through a network system.
用户能通过一个机顶终端访问该服务器，以通过网络系统接收hd增强层。
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