delay-differential system 时滞微分系统
a delay-differential system 时滞微分方程组
nonlinear delay differential system 非线性时滞微分系统
impulsive delay differential system 脉冲时滞微分系统
Stochastic delay-differential system 随机时变滞后系统
generalized delay differential system 广义延时微分方程
The planar delay differential system (1) has significant biological and physical backgrounds. For example, some special cases of (1) have been proposed as models of neural networks.
平面系统（1）具有重要的生物和物理背景，大量的神经网络模型都是以这种形式被提出的。
So, it has a practical significance to study the character of solutions of either degenerate differential system with delay or impulsive differential equations with delays.
因此研究退化、脉冲时滞微分方程解的性态具有重要的现实意义。
In the second chapter, we study an infinite delay differential equation, the system was widely applied in the biology, neural network and some other fields.
第二章是研究一类无穷时滞微分系统，此系统在生物，神经网络等领域中都有广泛应用。
应用推荐