The paper adopted cubic multinomial rectification technology which not only can correct optical lens's distortion but also has good rectification results for perspective and incline distortion.

文中采用了三次多项式校正技术，该技术不仅可校正光学镜头的几何畸变，对透视和倾斜所产生的畸变都有较好的校正效果。

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Finally, the paper introduced the application of synchronized rectification technology in brushless DC motor system.

最后，介绍了同步整流技术在无刷直流电机中的应用。

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Research progress and industrial application of catalytic rectification technology inland in catalytic rectification tower, catalyst and mathematical model are introduced.

介绍了国内催化精馏技术在催化精馏塔、催化剂和数学模型方面的研究进展及其工业应用情况。

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