系统

In DMMCS, there is an alternative distribution of inertial instability column and inertial stability column, at the west and south, there lie negative CVV columns, while negative CVV column is beneficial to deep moist convection.(4) The strong slantwise convection induced by inertial instability, baroclinic instability and conditional symmetry instability will enhance the upper level southerly component. Because of the appearance of the compensated downdraft at the low level of the south side of DMMCS, the low level southerly is intensified, the enhancement of upper- and low-level cores are in favor of the development of DMMCS. And that will do favor for the reinforcement and maintenance of inertial instability, baroclinic instability and conditional symmetry instability, it is a positive feedback process.

深湿对流系统中高层西侧为负MPV2 柱，东侧为正MPV2 柱；(3)深湿对流系统中惯性不稳定柱与惯性稳定柱相间分布，西侧为负CVV 柱，东侧为正CVV 柱，负CVV 柱对深湿对流起激发作用；（4）惯性不稳定、湿倾斜不稳定和条件不稳定产生强的倾斜式对流，而强的倾斜式上升运动加强了深对流系统北侧高层的南风分量，因深对流系统南侧低层出现补偿性下沉气流，因而低层南风加强，高低空急流中心的加强会进一步加强对流的发展，使得惯性不稳定、湿倾斜不稳定和条件不稳定增强和维持，这是一个正反馈过程。

In view of the fact that the complicated power electronic and electric machine system has multiple nonlineerand simulating tests are difficult and costly, the paper analyzes the configuration of the complicated power electronic and electric machine system, studies the model and simulation methods of each section and according to its section complexity, proposes the method of the modeling and simulation method of modeling separately and simulating connectedly to combine the circuit simulation method with the system simulation method.

针对复杂的电力电子电机系统通常具有多个非线性环节，且实验模拟测试困难费用昂贵等问题，采用仿真方法，通过分析复杂电力电子电机系统的结构，并根据其结构特点，研究了其各组成部分的建模与仿真方法，提出了根据各子系统复杂程度单独建模、再从系统角度把电路仿真和系统仿真结合起来联合仿真的仿真研究方法。

The main consignation result of this item includes the viability assessment, the need reports, system design text file, mold piece design, the system test plans, system the test reports, the system helps the text file.

本项目的主要交付成果包括可行性分析，需求报告，系统设计文档，模块设计，系统测试计划，系统测试报告，系统帮助文档。

The main consignation in that item result includes the viability assessment, the need reports, system design text file, mold piece design, the process designs, system the test plans, system test report, the system helps the text file.

该项目主要交付成果包括可行性分析，需求报告，系统设计文档，模块设计，流程设计，系统测试计划，系统测试报告，系统帮助文档。

Then according to the research of the state matrix, a concept that the system general damping coefficient keeps constant is proposed, which is helpful for understanding the interaction of all the dynamic components and impacts for the distribution of dampings.

论文在回顾特征值分析方法基本概念、步骤的基础上，通过对系统状态矩阵的研究，提出了广义系统阻尼守恒的概念，这便于理解系统中各动态元件的相互影响和对系统阻尼分配所起的作用。

This method is based on the theory of stability of linear time-varying systems. It realizes the synchronization by transferring high time-varying systems into low linear constant coefficient system.

该方法基于线性时变连续系统的稳定性理论，通过把高维时变系统的稳定性判定简化为低维定常辅助方程稳定性判定，从而减弱了时变系统的稳定性条件，实现了系统的耦合同步。

This paper includes four chapters,the first part is an introduction,the second part is concerned with the state of construct and improvement about the predator-prey sys-tem,the third part is concerned with the state of research about the predator-prey system. Some new directions of predator-prey system are introduced in brief in the fourth part.

本文共分四部分：第一部分是引言；第二部分介绍了捕食者-食饵系统的建立和发展现状；第三部分系统的阐述了捕食者-食饵系统的研究情况；第四部介绍了捕食系统的一些其它的研究方向。

By using the theories and methods of impulsive,discrete and continuous dynamical system,arithmetic operators,optimiza-tion and numerical simulation,we study locally and globally asymptotieal stability of the boundary periodic solutions,and the permanence of the these systems.

以脉冲动力系统理论为基础，同时结合离散动力系统、连续动力系统、算子理论、优化理论等相关的理论和方法，在已有的研究成果的基础上，研究这些模型的边界周期解的局部和全局渐进稳定性、系统的持续生存、周期解的存在性与唯一性以及周期解的轨道稳定性等等。

And the effects of length of data N to the approximate entropy of chaotic system isalso analyzed.All these are accomplished by examining several time series produced by a surperposition of white noise and noise-free data.It uses the discrete system logistic map and continuous system Lorenz attractoras the examples.

以Logistic方程描述的离散系统和Lorenz方程描述的连续系统为例，采用白噪声和无噪声信号以不同的信噪比混迭而成数据的方法，分析了相同数据长度N，不同信噪比下，混沌系统近似熵的变化；相同信噪比，不同数据长度对系统近似熵的影响。

Hybrid system is a type of sophisticated system which consists of interactive discrete event dynamic systems and continuous variable dynamic systems.

混合系统是由相互作用的离散事件动态系统和连续变量动态系统构成的复杂系统。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。