查询词典 mathematic

Take employ market for instance, many great companies like Mogen Stanly, Shell recruit their new staff by holding an examination with mathematic consequence, case reasoning and some other ways of checking a person's intellect.

例子：就业市场上很多自主招聘的试题数学推理、案例研究等思维能力测试都占了很大的比重；在中国，一些中学过度重视竞赛教育，这些学生绝大多数在中学后就不愿意再从事基础学科研究

In Chapter 2 the foundamental principle of GAs is introduced and the mathematic background of GAs is discussed. Then, a genetic algorithm based on non-Abel group theory and a parallel genetic algorithm based on supercube computer system are proposed.

遗传算法广泛地应用于函数优化和组合函数优化问题，然而如何改善其性能，提高收敛效率，仍然是当今遗传算法研究界的重要课题。

Synthetize discussions of fracture water mathematic models and practical condition are made on the base of system analysis on the theory of fractured flow.

在等效连续介质模型有效性判定方法研究上，提出裂隙岩体在满足下列条件时，采用等效连续介质模型理论研究裂隙水渗流规律是有效的：(1)存在代表性单元体。

In the first part, it describe the two-level system with the quantum mechanics which include the dress state picture, the adiabatic description of the interaction and the mathematic method; In the second part, it tell us that using the shaping-pulse how to manipulate the quantum coherent control, chip field and tanh field are invested.

第一部分二能级系统的量子描述在这一部分中详细推导了缀饰态表象中量子态的描述，重点介绍了绝热条件下的布洛赫矢量的表达式，以及求解布洛赫矢量的方法。

In order to provide a simple and convenient method of earthwork volume calculation in the work of terracing the land on hillside,a formula for earthwork volume calculation was developed using the methods of literature consultation and geometrical mathematic calculation.

为西南丘陵地区土地开发整理坡改梯坡式梯田土方量计算提供科学简便的计算公式和计算方法，为工程项目审查及预算审查提供坚实的依据。通过运用文献研究和几何数学方法，推导出坡改梯坡式梯田土方量的计算公式。

The VSCF DFIG wind power generation is transient response proceeding, which is influenced by operation characteristics of generator before and after grid connected. A novel S-Function is adopted to describe the mathematic model of DFIG based on state equation. A complete simulation model of VSCF DFIG wind power generation system based on MATLAB/Simulink and SimPowerSystems is established, which can be used to not only simulate subsystems of no-load operation and generation operation, as well as can be used to but also accurate control parameters of DFIG in simulation. The simulation model have excellent transportability, and can be used DFIG of different power rated if only design relevant controller.

变速恒频双馈电机风力发电是一个受并网前后发电机运行状况影响的暂态过程，利用MATLAB的S-Function编写DFIG的仿真程序，然后结合Simulink和SimPowerSystems工具箱，开发了基于S-Function的空载运行和发电运行的变速恒频双馈电机风力发电子系统模型，在仿真过程中可对双馈电机进行精确控制，然后对其进行了系统整合，本文开发的模型具有可移植性，只要再设计相应的控制器，就可应用于不同功率等级的双馈电机风力发电系统。

The mathematic description of the void volume fraction evolution is modified and the parameters in the modified model were obtained according to the tensile test results of uncorroded material.

根据未腐蚀材料拉伸试验数据，回归给出改进的孔隙率演化模型中的参数值。

In addition to,the implicit camera system model is made with BP neural network simulating the relationship between the 3D objects and its images in the stereo system,which avoiding the system errors caused by unperfected mathematic relation.

又运用BP神经网络来模拟立体视觉系统三维空间与二维图像平面之间的物、像对应关系，建立了双目立体视觉系统的摄像机隐式标定模型，避免了因数学模型的不完善而带来的系统误差。

Unweighted Pair Group with Mathematic Average was used to construct genetic tree of all individuals tested based on genetic distance.

对46份样本进行UPGMA聚类，研究结果表明：全同胞的犬在较高的相似水平上聚为l组。3品系犬的遗传背景复杂程度依次为：狼青＞黑背＞草黄。

The mechanism of migration and transformation for inorganic and organic pollutants in vadose zone and its research present situation at home and abroad are discussed;the mathematic model of simulated pollutants migrating and transforming rule in vadose zone and its applied qualification are explained,thus a foundation is laid for controlling the pollutants of vadose zone and underground water.

评述了包气带中无机污染物和有机污染物迁移的机理及国内外研究现状，说明了模拟污染物在包气带中迁移转化规律的数学模型及其应用条件，从而为控制包气带及地下水的污染奠定了基础。

Metrorrhagia is also gynaecological problems of common diseases.

崩漏是妇科常见病也是疑难症。

WordFTP gives you the convenience and timesaving you need.

wordftp让您的方便和省时您所需要的。