摘要
通过对一类平面n次系统特殊方向的类型及特殊方向附近轨线的性态的讨论。
The kind of specific direction and the characteristics of tractrixs near the specific direction of a type plane n _degree systems is discussed,and the clalculation formulas of singular point index are given.
出处
《山东师范大学学报(自然科学版)》
CAS
1997年第2期131-134,共4页
Journal of Shandong Normal University(Natural Science)