中文摘要：

本文讨论了一般二雏退化时滞微分系统当r≠0时平衡点稳定性的范围，并以滞量r为分支参数研究系统出现Hopf分支的条件．

英文摘要：

When r ≠0, the range of stability of an equilibrium point of a general 2- dimensional degenerate differential system with delay is given in this paper. Also, being regarded the delay r as a parameter,the conditions under which the system has a Hopf bifurcation can be obtained in this paper.