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Application of partially discontinuous fitting function in analysis and display of geological curve surface, Advancement of Chinese mathematical geology.

局部间断拟合函数在地质曲面分析和显示中的应用，中国数学地质进展。

Application of partially discontinuous fitting function in analysis and display of geological curve surface, advancement of chinese mathematical geology.beijing: press of geology,

局部间断拟合函数在地质曲面分析和显示中的应用，中国数学地质进展。北京：地质出版社，1995，14-23

It covers mathematical, control and technological aspects of discontinuous control systems.

它涵盖了数学，控制和连续控制系统的技术方面。

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。

Based on the discrete distribution characteristics of coil turns, the position error mathematical models of PCB air-core coils are set up and then analyzed.

该文基于线匝的离散分布特性建立了PCB空心线圈位置误差的数学模型，并进行了详细分析。

Being a helpful mathematical tool, discrete mathematics plays a significant role in the development and research of computer science.

离散数学作为有利的数学工具，对计算机的发展与计算机科学的研究起着重大的作用。

Mathematical logic is one of the difficulties of "Discrete Mathematics".

数理逻辑是《离散数学》的难点之一。

On the other hand, if the damage position and the damage size are used for description of the structural damage, the mathematical model is actually stated as a discrete structural optimization problem with unknown number of design variables, since the number of damages can not be given in advance.

本文采用极大极小问题构造损伤识别的优化模型，通过凝聚函数将极大极小问题转化为一个目标函数连续可微的无约束优化问题，采用基于灵敏度分析的序列线性规划方法求解。

The discrete reactive power optimization in power system is studied in this dissertation From the existing mathematical and ...

本文对电力系统及配电系统的离散无功优化问题进行了详细系统的研究，提出了离散无功优化的各种模型与算法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。