This paper firstly expounds the structure and function of the host computer system;
本文首先简单阐述了上位机平台的结构与功能；
Host is the core of a computer system and also, an important test object.
计算机系统的主机是系统的核心，也是测试的重要对象。
This system consists of host computer and slave computer two levels system.
系统由上位机和下位机二级系统构成。
Software system includes host and slave computer software design.
系统软件包含下位机和上位机软件设计。
Software system includes host and slave computer software design.
系统软件包含下位机和上位机软件设计。
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