Horses evolved in discrete steps, each of which persisted almost unchanged for millions of years and was eventually replaced by a distinctive newer model.
马是分阶段进化的，每一阶段都几乎保持了数百万年的不变，而最终被一种独特的新型马所取代。
This paper develops a simple aggregate model of discrete-continuous demand to motivate how this correlation can be tested using simple regression techniques and readily available firm data.
在本文中，我们提供了一个简单的基于离散-连续需求的加总模型，用来说明对这种相关关系的检测如何可以用简单的回归实现。
Copying model elements (especially when the elements can be containers or when they have relationships to other elements outside of the container) requires many discrete decisions.
复制模型单元(尤其是当单元为容器时，或者当它们与容器外部的其他单元相关时)需要进行许多分别的判定。
We concluded that the patterns mechanism is best-suited to small-scale transformations on discrete, individually selected model elements.
我们推断，模式机制能够良好地适应于对离散的、单个选择的模型单元进行小范围的转换。
Through detailed mathematic analysis and induction, a discrete time model of bandwidth and buffer limited stream media system is built.
论文通过详尽的数学分析和数学归纳，建立了带宽和缓存均有限的流媒体系统的离散时间模型。
In this paper, we mainly discuss the dynamical behavior of a discrete neural model.
本文主要分析了一类离散神经元模型的动力学行为。
In this paper, we first introduce a discrete time model of the mixed TCP and User Datagram Protocol (UDP) connection with the RED mechanism.
本文首先介绍一种随机早期检测机制(RED)与混合TCP和UDP流的离散时间模型。
Optimization controller for linear discrete-time state space model is designed.
设计出线性离散状态空间的最优控制器。
Research is carried out on the discrete noise theory and calculation method, the calculation model of discrete noise and the approximate formula under small Mach number are verified by experiments.
对低马赫数叶轮离散噪声的机理及计算方法进行了研究，并推导了离散噪声的声压计算式、低马赫数下近似计算式和轴心线上的计算式，还实验验证了计算模型。
The method utilizes a plane-layer starting model, each layer of which is divided into several discrete blocks.
该方法利用了一个水平层初始模式，把其中每一层分成一些离散的块体。
The relationship between the grey model(GM(1,1) model) and the discrete grey model(DGM(1,1) model) is analyzed, and their prediction precisions and stabilities are discussed.
分析了灰色预测模型GM（1，1）和离散灰色预测模型DGM（1，1）两者之间的关系，讨论了模型预测的准确性和稳定性。
Fourth, the theoretical model of optimum technological growth rate under discrete change is erected.
第四，构建了技术突变条件下的最优技术增长率模型。
The fourth order Runge-Kutta method is used to transform the mathematics model into discrete simulation model, using MATLAB7.0 simulation software to simulate its dynastic performance.
采用了四阶龙格-库塔算法，将数学模型转换为可仿真的离散模型，并利用MATLAB7.0对其进行了计算机仿真。
An optimum model of discrete input-output is established in this paper. The method of solving the model and the optimal controls of state feedback are given.
在此提出了离散投入产出优化模型，给出求解该模型的方法和状态反馈形式的最优控制解。
A discrete mathematical model of price negotiation for supplier was proposed by setting the maximum negotiation time.
通过设定最大谈判时间，给出了供应商价格谈判的离散数学模型。
At last, this paper provides the mend method of Discrete Vector Model, so that the system can enhance simulation precision in base of high real time, and has more perfect simulative performance.
在本文的最后，提出了离散矢量模型的改进方法，能在提高实时性的基础上，进一步提高数控仿真系统的仿真精度，完善仿真性能。
A mathematic model of spray wall-impingement was established based on discrete droplet model (DDM) considering the operating conditions of diesel engine.
基于离散液滴模型(DDM)，结合柴油机实际工作情况，建立了喷雾碰壁的数学模型。
This paper gives an improved MAC algorithm based on a simplified discrete convolution model for overdamped processes.
针对过阻尼过程，提出了一种基于简化的离散卷积模型的改进MAC算法。
The paper based on genetic algorithms proposes a method for identification of bilinear discrete dynamic model parameters.
本文以遗传算法为基础，提出了一种辨识双线性离散动态系统模型参数的方法。
Firstly, the paper models the multivariable discrete state-space model of the air transmission unit by the lab method, using multi-dimensional inverse m series as input stimulus signal.
首先利用多维逆m序列作为激励输入信号，用实验法建立出空气传送部分的多变量离散状态空间模型。
A mixed method of discrete system model reduction is proposed.
本文介绍一种离散系统模型降阶的混合方法。
Using the turbulence model and discrete phase model of FLUENT, the flow field and the track of the ash in the centrifugal blower was simulated.
使用FLUENT软件，通过湍流模型和离散相模型对风机内部的二维流场和二维粒子运动轨迹进行了模拟。
The moving least square meshless method and the couple stress theory were combined together. Discrete model of moving least square meshless method was derived based on couple stress theory.
将移动最小二乘无网格方法和弹性偶应力理论结合在一起，建立弹性偶应力理论的移动最小二乘无网格方法离散模型。
The discrete model of the thermal dynamics process of precision machine was used to establish a new method called singular value decomposition algorithm for identifying these characteristics.
在精密机械热动态过程的离散化模型基础上，提出一种识别精密机械热动态特性参数的新方法——奇异值分解算法。
This paper proposed an accurate calculation discrete model for the flow distribution in manifolds for heat exchangers.
本文通过实验研究和理论分析，提出准确计算换热器集箱管组中流量分配的离散模型。
This paper presents a new discrete model of NC path generation for free form surface machining.
提出一个面向曲面nc加工刀位计算的曲面离散基本单元模型及其误差控制方法。
A discrete model of Guassian beam is established based on Fourier Optics principles. The transfer efficiency of dual bending waveguide is obtained by using this model.
运用傅立叶光学理论建立高斯光束的离散化模型，并用这个模型计算了双弯曲金属波导的传输效率。
The algorithm makes use of discrete model given by plant identification directly, deduces discrete internal model controller, and is used in computer control of industry manufacture directly.
该算法直接利用对象辨识给出的离散模型，导出离散的内模控制器，直接用于工业生产的计算机控制。
The EFG method is based on moving least square(MLS) approximations, and only a set of nodal points and a description of the body are employed to formulate the discrete model.
基于最小二乘法的无网格方法仅需一系列节点信息就可构成物体的离散模型。
The EFG method is based on moving least square(MLS) approximations, and only a set of nodal points and a description of the body are employed to formulate the discrete model.
基于最小二乘法的无网格方法仅需一系列节点信息就可构成物体的离散模型。
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