中文摘要：

当今社会科学技术快速发展,计算机在机械设计方面的作用越来越大,尤其在农机分析与设计中已成为必不可少的一部分。在农机分析中应用三维CAD软件,能够降低成本、缩短产品生产周期和提高工作效率等。介绍了三维CAD软件的发展历程以及在农机设计和农机化专业教学中的应用。

英文摘要：

Nowadays, with rapid development of social science and technology, the role of computer in mechanical design is more and more big. Especially in the analysis and design of agricultural machinery, it has become an essential part. It can reduce costs, shorten production cycle of product and improve work efficiency etc through application of three dimensional CAD software in agricultural machinery analysis. Development history of three dimensional CAD software and its application in farm machinery design and teaching of agricultural mechanization were introduced.