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For the dynamic system of discrete coupled and nonlinear three phase voltage source PWM rectifier, the cycle switch average operator is introduced to transform the discrete system into continuous and the small signal perturbation method is used to transform the nonlinear system into linear, the small signal dynamic mathematical models are set up.

中文摘要：针对三相电压型PWM整流器这个离散的、耦合的、非线性的动态系统，引入开关周期平均算子将离散的系统变换为连续的系统，应用小信号扰动法将非线性的系统化解为线性的系统，进而分析系统的小信号动态数学模型。

For the dynamic system of discrete coupled and nonlinear three phase voltage source PWM rectifier, the cycle switch average operator is introduced to transform the discrete system into continuous andthe small signal perturbation method is used to transform the nonlinear system into linear, the small signal dynamic mathematical models are set up.

中文摘要：针对三相电压型PWM整流器这个离散的、耦合的、非线性的动态系统，引入开关周期平均算子将离散的系统变换为连续的系统，应用小信号扰动法将非线性的系统化解为线性的系统，进而分析系统的小信号动态数学模型。

Through careful analysis of the mathematics model of daily dispatching optimization of the cascade hydropower station, a new method based on the combination of two dimensional dynamic programming and discrete differential dynamic programming is proposed.

通过仔细分析梯级水库日优化调度的数学模型，提出了一种基于二维动态规划和离散微分动态规划相结合的混合求解策略，该策略理论上严谨，计算时间比较短，能满足日常调度的需要。

Adopting the latest research result on dynamic signal discrete spectrum analysis and the idea of virtual instrument, a dynamic signal analysis virtual instrument software system is developed, which is based on windows and has good performance.

并采用动态信号离散频谱分析领域最新研究成果，基于虚拟仪器设计思想，研制新方法、实时性好、精度高的基于Windows2000的动态信号分析虚拟仪器软件系统。

For the specification of the dynamic architecture of the system, the sub-function is designed as an abstract function with dynamic characteristic, which has a life-cycle of four phases: instantiation, establishment, execution and disestablishment.

为描述系统的动态结构，本文将子功能设计成一个具有动态特性的抽象功能，它有实例化、初始建立、功能执行和功能结束这样一个生命周期。

It is difficult to research dynamic stability of single-layer reticulated domes under earthquake action by Lyapunov dynamic stability theory.

基于这一理念，本文提出了动力稳定性实用判别方法，并在不同荷载和不同计算条件下进行了充分验证。

Vacuum dry is divided into static and dynamic drier.model fzg round vacuum drier or model fzg square vacuum drier belongs to dynamicdrier.model szg double cone rotating vacuum drier belongs to dynamic drier.

真空干燥设备分为静态干燥器和动态干燥机。yzg圆筒、fzg方型真空干燥机属于静态真空干燥器。szg双锥回转真空干燥机属于动态干燥机。

The dynamic simulation was conducted in two conditions and then the dynamic rollover threshold was determined. A dumping stability field test of the dump truck was also done and the rollover threshold was determined.

根据自卸汽车的使用环境及工作条件确定了两种计算工况，对自卸汽车作业稳定性进行了仿真分析，找出了各使用工况的侧翻临界值。

Data dynamic exchange and real-time question were introduced and analyzed, several dynamic exchange technologies were mainly compared, and the use of ActiveX technology in the remote monitoring and control system was analyzed in details.

对数据动态交换及实时性问题进行了介绍和分析，对比了几种主要的动态交换技术，并详细分析了ActiveX技术在远程监控系统中的使用。

Austria school thinks that equilibrium is dynamic, and competition is dynamic also.

奥地利学派认为均衡是动态的，竞争也是动态的。

It inculcates justification before God on the ground of human merits.

它说明在上帝灌输在地上人类优点。

TH Leaguer has excellent Quality Control and Management System.

本公司具有完善的品管部门。