查询词典 discrete

Hence, to research into fast discrete transforms is of great theoretical significance and of practical value.

因此，研究快速离散变换具有重要的理论意义与广泛的实用价值。

In addition, a brief numerical analysis to the error of this discrete scheme is given.

同时，对这种离散格式的截断误差给出了简单的数值分析。

Because the modern manufacturing system is a kind of discrete systems with nonlinearity, discreteness, randomness and complexity, it is difficult to describe the structure and control of the system with common mathematics models.

现代制造系统是一类具有高度非线性、离散性、随机性和复杂性的离散系统，这类系统的结构和控制问题难于用一般的数学模型来描述。

For the diffractive optical element realizing beam shaping in the fractional Fourier transform domain,the transform matrix calculated by the discrete sampling points was compared with that calculated by the Fresnel integral,and the discretization error of the intensity distribution on the output plane was qualitatively obtained.

针对分数傅里叶变换衍射光学光束整形器件，比较了按离散点与按菲涅耳积分计算得到的变换矩阵间的差距，从中分析得出按离散点计算的变换矩阵引入的离散化误差与分数傅里叶变换系统参数的关系。

A discrete cosine transformalgorithm was used to process the joint power spectrum in order to enhance thecross-correlator term and eliminate the auto-correlator term in the joint power spectrumand improve the discriminability of the system.

通过对空间光调制器在傅氏谱平面的灰度动态范围进行调节，控制了通过整个系统的光能量，使得系统能够实时运行。

A discrete cosine transform algorithm was used to process the joint power spectrum in order to enhance the cross correlator term and eliminate the auto correlator term in the joint power spectrum and improve the discriminability of the system.

利用离散余弦变换算法对联合变换功率谱进行数字处理，增强傅里叶面的互相关项，消除自相关项，提高了系统的识别能力。采用一种新的双参数判别方法对相关信号进行判别，提高了判别的准确度。

Although the out-of-the-sample predictive ability of financial distress is not improved by gradually incorporating different kinds of variables in one analysis, the model performance is quite well overall. The entire discriminability of discrete-time hazard analysis is better than logistic regression under each model.

然而，就样本期间外而言，同一种分析方法下模型之财务危机预测能力，并未随著不同种类解释变数之加入而逐步提高，但分类能力皆十分优良；而在同一种模型下离散时间涉险分析方法之整体分类能力皆高於罗吉斯回归分析方法。

Based on the concept of discrete discriminant function, a novel feature extraction method in the case of every person having only one training sample is presented.

对于变化较大的人脸图象，用这种方法抽取的代数特征可得到良好的识别效果。

Indicating the main characteristics of production technology in mail process center. Knowing in detail of the computer model and simulation method of discrete event system; investigation of computer simulation software; comparison and analysis the advantage and disdvantage of the simulation software. Modeling and simulating the package sorting production line in Xinjiang Newspapers and Periodicals Emitting Office and analyzing the simulation result. Modeling and simulating the hanging sorting -production line in Urmqi Mail Processing Center and analyzing the simulationresultProposes a simulation design method for the mail center auto product line, and made a simulation design for package emitting auto product line in Xinjiang Newspapers and Periodicals Emitting Office. Modeling a mathematical model and simulate for the construction of the sorting table of package sorting machine, and proposes a scheme of discriminatingly setting the buffers of sorting table.

本文的主要工作如下：针对邮政业务，特别是邮件处理中心的邮政业务作详细的调查分析，指出邮件处理中心生产工艺的主要特征；通过详细的了解离散事件系统计算机仿真技术的研究方法，并对计算机仿真软件作了周密的调查，借鉴、分析比较其功能特性的优缺点后，根据实际情况选购了本论文所需的仿真软件工具；对报刊发行局包件分拣生产线作计算机建模和仿真，将仿真结果作分析总结；对邮件处理中心转运中心的推推分拣生产线作计算机建模和仿真，得到仿真结果并作总结分析；提出邮件处理中心自动生产线的仿真设计方法，对报刊发行局期刊发行自动化生产线作仿真设计；最后对包件分拣机上包台结构建立数学模型和计算机仿真，提出多级上包台区别设置缓冲区的方案。

In the discrete components, television receivers, almost all of the proportional frequency discriminator.

在分立元件电视接收机中，几乎都采用比例鉴频器。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。