For the universal ability of network connect, UNCS is divided into two layers, Kernel layer and Adapter layer, and they have different target.

为了保证通用性，通用网络接入子系统划分为核心层和适配器层两个层次，它们各有不同的目标。

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This paper proposes a design method of communication platform, which is divided into two layers, bottom is communication layer and top is communication proxy layer.

文章提出了一种分层式的通信平台设计方法，即将通信平台分为通信底层和通信代理层。

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The system can be divided into two layers: the data access subsystem and the layout subsystem, and the design of the layout subsystem is based on SCH (Software Component Hierarchy).

系统包括数据访问子系统和排版子系统两层，排版子系统采用软插件体系进行设计。

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