王德苏同志是机械工程师进修大学的学员,学习“摩擦学”课后,应用所学知识指导生产实践,解决了本厂的实际问题,受到山西分校的好评。本文既是学以致用的产物,又有一定的推广价值,因此,推荐给广大学员与读者。 Comrade Wang Deshun is a mechanical engineer training university students, learning “Tribology” after class, applying the knowledge to guide the production practice, to solve the practical problems of our factory, by the Shanxi branch of praise. This article is not only a product of learning, but also has some promotional value, therefore, recommended to the majority of students and readers.