查询词典 operator

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。

If the operator's spectrum is discrete, the observable can only attain those discrete eigenvalues.

假如操作者光谱是发散的，可见仅能获得那些离散特征值。

We investigate the discrete time system which is described by S operator as follows.

本文主要从以下几个方面对Delta算子系统做了探讨。

The nonlinear sliding mode controller is taken as an example, the implementation form of δ operator discretization control, the error analysis and the algorithms stability are studied both theoty and engineering application.

数值仿真表明，当高速开关阀的节流孔流量系数、摩擦片的磨损量、摩擦系数、传动系的弹性系数等因素在允许范围内变化时，滑模控制器的跟踪误差远低于一般的PID控制器。

According to some practical examples, this thesis gives the basic definition and uniform form of inverse problems and ill-posed problems, and then operator equation is got by discursion.

本文从一些实例出发，给出了反问题和不适定问题的基本概念及反问题的统一形式，从而得出了算子方程。

Hit 0 for operator and the disembodied voice says I have called after hours .

命中0和身体化经营为声音叫我说营业时间。

So for now, the disintermediation action is mainly in Europe, where Turquoise is targeting trading in the top 350 stocks - and where the NYSE has taken over Euronext, operator of continental bourses.

到目前为止，去除中间业务行动主要是在欧洲，欧洲绿松石计划的目标交易是顶尖的350只股票，纽约证交所则在欧洲收购了大陆交易所运营商泛欧交易所。

Wheel disk gambling selection operator, adaptive crossover and mutation operators are used as genetic operators.

其中遗传算子分别采用轮盘赌选择算子以及自适应的交叉和变异算子。

Near 10% professional users had disorient operator error. Shooting these disorient problems can decrease this kind of error.

改善资料读取方向的问题，可以大辐改善经纬仪使用时的错误性。

The matrix elements of SU(1,1)displacement operator in theirreducible representation space are obtained.

这种表达式比以往的级数表示形式和拉盖尔多项式表示形式更加方便和简洁，易于进行数值计算。

Effective local search tactics reaches local searchers when they are ready to buy - with every way that it is possible for them to buy from you.

有效的地方搜索策略达到当地的搜索，当他们准备购买-以各种方式，这是他们有可能从您那里进行购买。

The first two are periodic sentences for their beginnings; and the fifth and the last are also periodic sentences each for the embedding of a parenthetic structure.

1960年代中后期，当战后女权主义和当时的许多其他抗议运动在西欧和北美发展成某种势力时，性别的概念演绎成补充和延伸生物性别差异的概念。