Considering various aspects, N layer logic structure is used in designing the system to fulfill complicated business functions by function calling regularly through layers.

基于各方面的考虑，我们在系统设计时采用N层逻辑结构，通过上下层之间按照一定规则的调用，从而完成了多个复杂的业务功能。

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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。

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Using the photovoltaic spectral response of epitaxial P-N junction, the paper suggests a method of determining the minority carrier diffusion length in N layer of N/P epitaxial silicon wafer.

本文提出了用N/P硅外延片的结光电压光谱响应确定N/P硅外延片中少子扩散长度的方法。

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