本文介绍了铁路涵洞CAD系统总体设计方案和系统组成。
This paper introduces the CAD of railway culvert, including the overall design scheme and the system composition.
本文介绍该冲床的总体设计方案、机械结构设计、使用效果及其主要性能。
This article introduces an overall design plan, mechanical construction design, the operational effect and the main technical properties of the punch.
通过对光栅自动测试仪的基本测试原理进行分析，给出了测试仪的总体设计方案。
By analyzing the principle of grating auto testing, a general design of the instrument was given.
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