摘要
本文重点阐述了判定摩擦力方向的方法,对摩擦力的作用及摩擦力的成因进行了比较深入的探讨。
This paper mainly discusses the methods of judging the direction of friction force,and the effect and cause of friction force is studied systematically.
出处
《宝鸡文理学院学报（自然科学版）》
CAS
1993年第2期86-90,共5页
Journal of Baoji University of Arts and Sciences(Natural Science Edition)
