从数学方法的角度，通过若干实例的分析，阐明了“数学构造性方法”的具体应用。
From the Angle of mathematical methodology, by analyzing some typical examples, the forth application are set on constructivity method of mathematics.
文中通过若干实例介绍了用红外热象仪检测带电运行的发电机、电容器及连接头，并查出带有严重缺陷的部位，从而避免事故发生。
Some examples for the diagnosis by the infrared imaging system such as generators, capacitors and connectors in service are presented. The defects are detected to avoid accident.
本文通过若干实例，初步探讨了CAD技术的分支CAGD的概念及应用方向，提出了一些应用CAGD手段解决工程实践问题的方法。
This paper approaches the branch of CAD, the concept and applied direction of CAGD from different examples, and puts forward the solution to the practical engineering problems by applying CAGD.
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