The paper presents designing principle, structure characteristic and construction technology of bed rock bench marks.
本文介绍其设计原理、结构特点与施工技术。
It presents work principle, hardware structure and software designing.
分析了该系统的工作原理、硬件配置与软件设计方法。
It presents work principle, hardware structure and software designing.
分析了该系统的工作原理、硬件配置与软件设计方法。
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