查询词典 mathematic

This makes it difficult to construct accurate mathematic models,and makes PID controllers with fixed parameters unadapted to higher and higher control request in production.

提出了控制系统"时间尺度"的慨念，并结合工程实践积累的经验，给出了一套PID控制器参数工程整定方法。

Through profound study of coupling relationship between gyroscope scale factor and its input axis misalignment,an uncouple principle was proposed,a precise mathematic model was established,and a set of uncouple test equipment and experiment were designed;the methods for solving constraint nonlinear Least-Squares problems were applied...

通过研究陀螺标度因数与输入轴失准角之间的耦合关系，提出了解耦测试原理，建立了严格的数学模型，针对该原理设计了解耦测试设备和方法；应用有约束多元非线性最小二乘问题解法实现了解耦解算。

Thus, the CPU operation process can be more understandability for the interested user by this mathematic modeling analysis system.

盼望在其研究过程下，能够使得 CPU 的运作流程藉由一具有数学架构的模型分析系统，让有兴趣者更能深入的暸解。

Numerical simulations were done for a bistable latch valve of the system by FLUENT, and three groups of datum for different fluids were obtained with the same effective exit sectional area. Besides, a static mathematic model for the electromagnetic valve was established based on the obtained datum. Secondly, the motion of the valve spool was realized by UDF file in FLUENT. Three kinds of motions, uniform, acceleration and motion driven by the coupling effect of the liquid resistance and the electromagnetic force, were calculated and compared. The dynamic characteristic of the electromagnetic valve was obtained by analyzing the relationship of the mass flow rate of the inside flow field of the electromagnetic valve, the change of the drop pressure of the passageway of the valve, and motion time.

并针对系统中的某双稳态电磁阀，使用商用CFD软件FLUENT对其进行内部流场的数值模拟，通过使用不同流体介质，不改变阀门有效出口截面积的情况下，分析得到的三组数据，建立了该电磁阀的静态数学模型；通过编写UDF文件，实现对阀芯运动方程的控制，在阀门做由闭合到开启、开启到闭合运动时，控制阀芯分别做匀速运动、匀加速运动以及阀芯受到液体阻力与电磁力作用力的耦合力的运动，分析了三种工况下电磁阀内部流场质量流率和阀门出口入口压降的变化以及运动时间，从而得到该电磁阀的动态特性。

The process of uniform velocity temperature control is a complicated process and has the characteristics of big inertia,pure time-delay and nonlinearity,and it is hard to obtain the exact mathematic model.

匀速升温控制是个复杂的过程，具有大惯性、纯滞后、非线性等特点，难以得到精确的数学模型。

The model theoretical value is that prompts higher degree intrinsic unitarity among historical materialism, moral education theory, and mathematic statistics.

这一模型的理论价值在於揭示了历史唯物主义、德育理论和数理统计三者之同高度的内在统一性。

Constructing a unitary matrix for transformation of coordinates by means of quadratic form theory,the Hamiltonian of the 3D coordinate-momentum coupling harmonic oscillator is transformed into diagonalmatrix,it not only offer a general mathematic method for solving this kind of problems,but also have an active effect upon upgrading students ability to solve physics problems by mathematical theory.

利用二次型理论构造一个幺正矩阵进行表象变换，将|x〉表象中的三模坐标-动量耦合量子谐振子体系的哈密顿量对角化，这不仅提供了一种解决该类问题的一般数学方法，同时对培养和提升学生运用数学工具解决复杂物理问题的能力也具有积极的指导作用。

The thesis also gives the estimated upper bounds of error decision probability. When the compressor is confined to be a lattice vector quantizer, a explicit mathematic equation for the rate of the performance convergence to the optimum is derived. On the other hand, Distortion Ratio Aproachs to the design of testing system on the basis of vector quantization are put forward, and methods for building the variable length decision tree as well as the fixed length one presented.

在算法方面，提出了失真比矢量量化检验器的设计方法以及可变长和固定码长分类判决树的生成算法；为了解决以矢量量化器为核心的处理系统运算量大，不易实时实现的问题，论文中引入了熵减的概念，在此基础上提出一种快速最近邻搜索编码方法，理论分析及实验结果均证实了这种算法的有效性。

The method used to build the mathematic platform for elimnating the influence of the vertical and horizontal swaying angles of the ship and the correction method of the fire angle mainly presented in this paper.

分析了船在航行中的几种摇荡对火炮射击精度的影响，主要介绍了用于消除船体纵摇角和横摇角影响的数学平台的建立方法，以及射击角的修正。

Introduces MES and models Analyzes character of vestee enterprise and two dispatching mode Based on minimizing the cost of enterprise it developments mathematic models .

介绍制造执行系统和S95标准，分析装饰布企业生产调度的特点和两种调度模式，以"企业成本最小化"为调度性能指标建立了数学模型。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。