The state variable approach of modern control theory provides a uniform and powerful method of representing systems of arbitrary order, linear or nonlinear, with time-varying or constant coefficients.
现代控制理论的状态变量法提供了一种统一、高效的方法来描述具有任意阶次、线性或非线性、时变或常系数的各种系统。
The paper investigates the solution of a class of linear homogeneous differential equations with varied coefficients and methods of decreasing order of the DE.
探求一类变系数方程的求特解的方法以及对方程的降阶。
In this paper, the truncation errors of the height anomaly and vertical deflection are estimated, and the approximate expressions of the higher order truncation coefficients are derived.
本文对高度异常及垂线偏差的截断误差进行了估计，导出了高阶截断系数的近似表达式。
While minimizing the use of clock cycles, it could decode the coded stream of transform coefficients in each block and output the decoded coefficients in zigzag scanning order.
在尽量减少时钟消耗的前提下，此解码器可以解码每个变换块中变换系数的熵编码码流，并将结果按照块扫描顺序并行输出。
This paper mainly deals with an initial-oblique derivative problem for nonlinear nondivergent parabolic systems of second order equations with measurable coefficients in a multiply connected domain.
讨论可测系数的二阶非线性非散度型抛物型方程组在多连通区域上的初-斜微商边值问题。
The initial regular oblique derivative problem for nonlinear parabolic systems of several second order complex equations with measurable coefficients in a multiply connected domain is discussed.
论述了多连通区域上可测系数的二阶非线性抛物[型]方程组的初-正则斜微商问题。
At the same time, the weight coefficients of plate width and rolling force have been used in the calculation of roll shape in order to improve the calculation accuracy.
同时为使设计出的辊型更趋完善，在计算过程中还引入了压力、板宽加权系数。
The axial third order aberration coefficients of an inhomogeneous magnetic sector field are derived for the first time.
首次推导出了非均匀扇形磁场的轴向三阶象差系数。
The hyper order, the exponent of convergence and the hyper-exponent of convergence of zeros of solutions for some types of K-order linear differential equations with entire coefficients are discussed.
研究了几类K阶整系数线性微分方程解的超级、零点收敛指数和零点超收敛指数，得到一些精确的结果。
The relation between the rearrangement of the coefficients of a Dirichlet series in the right surface and the order of growths of this series sum-function was investigated.
研究了右半平面上狄利克雷级数系数的重排与此级数的和函数的增长级的关系，获得了在右半平面上有限狄利克雷级数的增长级与型保持不变的重排特征。
In order to improve the running efficiency, variational ratio coefficients are used during path searching to adapt the characteristic of the road network path searching.
根据路网分布的特点，采取比值系数分段取值的方法，进一步提高了算法效率。
There are two approximate reflection coefficients applied generally, and their differences are compared in order to attain the linear formula of azimuthal AVO inversion of P-wave.
首先，从理论上讨论了各向异性介质中的反射和透射系数方程，给出了裂缝介质的线性近似反射系数公式；
In this paper, we investigate growth problems of solutions of a type of homogeneous and non-homogeneous higher order linear differential equations with entire coefficients of iterated order.
本文研究一类高阶线性齐次与非齐次迭代级整函数系数微分方程解的增长性问题。
The wetted surface coefficients of 122 round bottom crafts have been analysed in order to derive a prediction equation by the method of least-squares.
本文用回归分析方法分析了122艘圆舭艇湿表面积系数，得出湿表面积系数预报方程序。
Smoother vehicles may have drag coefficients of the order of 0.55.
光滑飞行器的阻力系数可能为0.55量级。
Established a linearized oscillation result of the second order nonlinear neutral delay differential equation with positive and negative coefficients.
建立了二阶具正负系数的非线性中立型微分方程的一个线性化振动性结果。
In order to approximate the actual vertical stiffness coefficients of the joint elements representing the shear strength of soil, formulas and iteration method are suggested.
为确定代表土抗剪强度的节理单元竖向刚度系数，文中提出了一套相应的计算公式和试算迭代的计算方法，用来逐步逼近其真值。
We present an accurate route, which is suitable for the design of nonlinear optical frequency translator of biaxial crystals, to calculate the effective second-order nonlinear coefficients.
本文介绍计算双轴晶体二阶有效非线性系数的严格理论，适用于双轴晶体非线性光学频率变换器件的设计。
The study is made on the oscillation of a class of the first order nonlinear retarded differential equations with variable coefficients, and the sufficient conditions are obtained.
本文研究了一类一阶变系数非线性滞后型微分方程解的振动性，得到这类方程仅有振动解的充分条件。
In this paper, we study an approximate solution of the second-order linear ordinary differential equations with variable coefficients.
本文研究了二阶变系数线性常微分方程的一种近似求解方法。
This order relation expresses the decision-makers satisfaction degree based on which the inequality constraints of interval DEA can be transformed into constraints with exact coefficients.
定义了一种反映决策者满意度的区间数序关系，基于此将区间DEA中的区间不等式约束转化为确定型约束。
This paper discuss the locally topological structure of higher order singular point for the plane cubic system in the first critical case and give a criterion by the coefficients of polynomials.
讨论了第一临界情形下的平面三次系统高次奇点的局部拓朴结构，并给出利用多项式系数的判断准则。
The best direction of quality and efficacy coefficients has to be found as the direction of drill hole vector in order to ensuring engineering quality and raising economic efficacy.
为保证工程质量和提高经济效益，应寻找质量效益系数最佳的方向作为钻孔矢量的方向。
Some sufficient conditions are obtained for the oscillation of first order neutral differential-difference equations with positive and negative periodic coefficients.
本文获得了一阶正负周期系数的中立型微分差分方程振动的充分条件。
The order of total slenderness ratios of the five trains is as same as that of aerodynamic drag coefficients.
计算得到的不同流线型列车的整体长细比大小排序与其气动阻力系数排序完全一致。
These features of high order weight coefficients guarantee the reliability of the final evaluation conclusions to a great extent.
高阶连接权的上述特性充分保证了运行工况快速评估结果的可靠性。
But most blind equalizer converge very slow, a new algorithm for calculating the best coefficients using high order moments presented, and get a conclusion for the performance of the method.
针对盲均衡算法中，以梯度的估值计算抽头最佳系数时收敛性不理想的问题，介绍了一种新的以高阶矩来求解均衡系数的方法，并对该方法的性能进行了讨论。
The locally topological structure of higher order singular point for the plane quartic system in the first critical case is discussed, and a criteria by the coefficients of polynomials is given.
讨论了第一临界情形下的平面三次系统高次奇点的局部拓朴结构，并给出利用多项式系数的判断准则。
The results show that, the velocity and instantaneous flow rate distribution of second order fluid with variable coefficients differ greatly from the ones of the power-law fluid;
对比分析结果显示，变系数二阶流体和幂律流体在速度分布和瞬时流量分布上都有较大的差异；
The results show that, the velocity and instantaneous flow rate distribution of second order fluid with variable coefficients differ greatly from the ones of the power-law fluid;
对比分析结果显示，变系数二阶流体和幂律流体在速度分布和瞬时流量分布上都有较大的差异；
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