文中给出了油气悬架结构简图，阐述了油气悬架的工作原理。
This article builds the structure sketch of hydro-pneumatic spring and expatiates its working principle.
提出了基于工程结构简图语义知识的计算机结构模式识别方法。
An approach of computer geometric pattern recognition, which is based on semantic knowledge of an engineering structure sketch, is presented in this paper.
给出了模具的结构简图并分析了其结构的特点，有效地解决了离合器外壳生产的实际问题。
This paper presents the structure sketch of a die and analyses its structure, all these are convenient to solve the technology problems on the shell of clutch.
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