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1·The time varying singular delay differential systems will be discussed.

本文将研究时变退化时滞微分系统。

2·Time varying parameter estimation is very important to the control of dynamic system.

时变参数的估计问题，对于动态系统的控制是十分重要的。

3·Xiaoming SU, Qingling Zhang, Periodic Time Varying Descriptor Systems, Science Press, 2006.

苏晓明，张庆灵，广义周期时变系统，科学出版社，2006。

4·Bandwidth describes the instrument's ability to respond to time varying signals over a range of frequencies.

带宽说明了仪器在某一频率范围内响应时变信号的能力。

5·Output tracking for a class of affine nonlinear time varying systems based on state observers is considered.

研究一类仿射非线性时变系统基于状态观测器的输出反馈跟踪问题。

6·This paper lays emphasis on the research of internal connection of various time varying parameter identification methods.

本文重点研究了现有各种时变参数识别方法的内在联系及各自特点。

7·The model-free control is especially useful for real nonlinear systems whose orders and modeling are very difficult to be known and time varying.

无模型控制方法非常适用于实际的阶数难以知道或难以辨识，且是时变的非线性系统。

8·The model-free control is especially useful for real nonlinear systems whose model parameter are very difficult to be identified and time varying.

此无模型控制方法非常适用于实际的模型参数难以辨识，且是时变的非线性系统。

9·Based on a typical time varying and nonlinear system with large delay time, it is difficult to describe the whole process using a mathematical model.

基于复杂工艺过程的时变、非线性、大滞后的系统，很难用一个确定的数学模型去描述整个过程。

10·As sinter is a typical time varying and nonlinear system with large delay time, it is difficult to describe the whole process using a mathematical model.

烧结是一个典型的时变、非线性、大滞后的系统，很难用一个确定的数学模型去描述整个过程。

时变

1·A-operator method (AOM) is used to study the influence of the speed ratio and time varying meshing stiffness on rattling threshold speed of the gear system.

用算符分解算法(AOM)得到了系统的近似解析解，并研究了传动比和时变啮合刚度对拍击门槛转速的影响。

2·As a new technique of signal processing, wavelet analysis has excellent characteristics of time frequency localization and is suitable for analyzing time varying or transient signals.

作为一种日益获得广泛应用的信号处理新技术，小波分析具有良好的时频局域化特性，适应于时变和瞬变信号的分析。

3·As sinter is a typical time varying and nonlinear system with large delay time, it is difficult to describe the whole process using a mathematical model.

烧结是一个典型的时变、非线性、大滞后的系统，很难用一个确定的数学模型去描述整个过程。

4·Bandwidth describes the instrument's ability to respond to time varying signals over a range of frequencies.

带宽说明了仪器在某一频率范围内响应时变信号的能力。

5·Time varying parameter estimation is very important to the control of dynamic system.

时变参数的估计问题，对于动态系统的控制是十分重要的。