【1】电机学国家级精品资源共享课:
https://www.icourses.cn/sCourse/course_3361.html
【2】电机学精品在线MOOC课程:
http://www.xueyinonline.com/detail/86473171
【3】PLC电气控制与组态设计精品在线MOOC课程:
http://www.xueyinonline.com/detail/204546772