讨论了在化工工艺课中引入项目教学法的必要性以及项目设计的基本要求，并以高密度聚乙烯的生产作为学习项目进行了分析。

This paper discusses the necessity of introducing project-based teaching method into the chemical technology course, and some basic requirements of designing the project.

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本文分析了专业课案例教学出现的一些问题，讨论分析了教学案例选取、设计的原则、案例教学与传统课堂教学方法的差异及其实施方法。

First the problems of case teaching in professional education are analyzed. And then the methods of selecting case, case design and the way of case teaching are discussed.

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在论文的第五部分以探究课形式进行实践，并对实践的结果进行分析和讨论。

In the paper fifth part inquired into the class form carries on the practice, and has carried on the analysis and the discussion to the practice result.

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