Electric machinery is very important to the students in department of electrical engineering, but the course is very difficult to study. In this paper some difficult and important problems in teaching of electric machinery were summarized and analyzed, and demonstrated in Flash software. The key points for each problem were also illustrated at meanwhile with the movies. Its effects were proved by practice.% 电机学对电气工程和自动化专业学生非常重要，但课程本身比较难学。根据电机学授课的具体要求，总结了教学中的重难点问题，进行了要点分析，并采用Flash动画技术制作了多媒体课件。课件在详细演示各个问题物理本质的同时，对知识要点也进行了说明。课件实际应用效果良好
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