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The existence of positive periodic solution for thissystem is obtained by using the continuation theorem of coincide degree.

讨论了具变时滞周期单物种差分系统，用重合度的连续定理获得了这个系统的周期解的存在性。

In this paper, the existence of the periodic solution for two classes of piecewise symmetric systems is studied, and the certain sufficient conditions for the existence of the corresponding systems are obtained.

本文研究了两类分段对称系统周期解的存在性，得到了系统相应的周期解存在的充分条件。

As an application, the existence of the periodic solution for a class of delay differential equations with piecewise sysmmetric condition is proved.

作为应用，证明了一类具有分段对称性的时滞微分方程的周期解的存在性，推广了现有的相关结果。

Then, we use numerical continual method to get the periodic numerical solution.

接着，我们尝试运用数值延拓法求取其周期数值解。

The results show that there exists different forms of soliton solutions and periodic solutions for this coupled system.

结果表明，这个系统存在不同形式的包络孤子解和周期解。

The increased use of computerized systems has increased the use of the periodic system.

d。增加使用电脑系统，增加了使用的定期制度。

In section 1, the optimal control problems for periodic population dynamic system with age-dependence are discussed.

其中第一节考虑了具有年龄结构的周期单种群动力系统的最优控制问题。

The existence of positive periodic solutions of this system is established by using coincidence degree theory.

利用重合度理论得到了该系统正周期解存在的充分条件。来源：ABC79论文网www.abclunwen.com

Explain the operation of a periodic inventory system.

解释存货的定期盘存制的运用。

At the same time, the real time and periodic feature require the storage system to be QoS aware.

同时，连续媒体的实时性和周期性要求存储系统保证响应的业务质量。

This paper discusses design and realizable methods of remote test output interface from logical design angle.

本文从逻辑设计的角度讨论遥测输出接口的设计及实现方法。

This also 星体投射plies to buildings, structures and geological features.

这也适用于建筑物和地质特征。