By constructing the liapunov function,the authors study the trajectory of model and give the position trajectory.
讨论了污染环境中体内毒素浓度不同的两种群竞争模型,通过构造适当的L iapunov函数,研究了模型的轨线并且给出了轨线的位置。
The structure of the trajectory near the origin of the following nonlinear differential equations was discussed.
讨论了非线性微分方程组在奇点 (0 ,0 )邻域内轨线分布的性态 ,得到了判定原点 (0 ,0 )是微分方程组焦点的两个简便方法 ,改进、推广了一些相应的结果 。
The atomic and molecular reaction dynamics for Si(1[KG-2]D_g) +H_2(0,0) and H(2[KG-2]S_g) +SiH(0,0) have been studied on the potential energy function SiH_2(X1[KG-2]A_1) by Monte-Carlo quasi-classical trajectory approach.
基于多体展式方法所导出的SiH2(X1A1)分析势能函数,用准经典的MonteCarlo轨线法研究了Si(1Dg)+H2(0,0)和H(2Sg)+SiH(0,0)的原子与分子反应动力学过程。
The method using microcomputer to draw the phase graph of autonomous system on plane of ordinarily differential equation is studied,first a large number of data of orbit are obtained by an appropriate method of numerical calculation from known initial condition,then computer draw the curve of orbit on screen by these data.
研究利用微机绘制常微分方程平面自治系统相图的方法 ,首先用一种合适的数值算法由已知的初始条件得到轨线的大量数据 ,再利用这些数据在计算机屏幕上画出轨线的图形。
In this paper, we proved that transformation (3) and Poincar transformation (2) have the same function when infinite singular points and their quality and the trend of orbits are judged.
本文证明了变换式 ( 3)与Poincar 变换 ( 2 )在判断无穷远奇点及其性质 ,轨线的走向时作用相同 ,从而Poincar 变换 ( 2 )也可用变换 ( 3)替
To the evolutive prcblem of 2/1 resonant asteroid affected by PoyntingRobertson drag, this paper gives a global analysis of the orbits using the qualitative theory in differential equation.
针对ＰｏｙｎｔｉｎｇＲｏｂｅｒｔｓｏｎ力作用２／１通约小天体的演化问题，采用微分方程定性理论对系统的整体轨线分布及其演化进行了分析，得到随着时间的发展２／１通约带出现空隙的结论。
The uniform convergence for a kind of function sequence on a certain internal is derived by using extended Grownwall s inequality and some approximation formulae of the trajectories determined by Lienard equations are obtained.
利用推广的Grownwall不等式，证明了一类函数序列在所论区间上的一致收敛性，从而给出了两类Lienard方程的两条特殊轨线的逼近解。
We focus on the following problems: Are there any trajectories which have tangent line θ=θ0 and tend to the singular point of the system, when G(θ) = H(θ) = 0, where θ=θ0 is the characteristic direction of this singular point? The results for polynomial differential systems in this paper are one kind of simple forms of paper [4]) s, and hence the results of this paper are more convenient to use.
分析多项式微分系统的奇点(0,0),当G(θ_0)=H(θ_0)=0时,沿其特征方向θ=θ_0有无轨线通向奇点(0,0)的问题,对于多项式微分系统简化了文献[4]的条件,从而便于直接应用,最后以例示之。
A curve that cuts all of a given family of curves or surfaces at the same angle.
常角轨道，轨线以同样的角度切割给定系统所有曲线或平面的曲线
a line of track providing a runway for wheels.
一条为火车准备的铁轨线。
A track or way for trams, as in a mine.
有轨车辆的轨道或路线，如在矿山中的
Calculation of Impedance of Rail Track for Ballastless Track Line;
无碴轨道线路钢轨阻抗参数计算方法
Research on Wheel-Rail Rolling Noise on Ballasted Track of Passenger Dedicated Line;
客运专线有碴轨道轮轨滚动噪声研究
Research on Design of the 40.5 m Steel Track Girder for Line 2 of Chongqing Light Rail
重庆轻轨2号线40.5m钢轨道梁设计研究
LCAO (Linear Combination of Atomic Orbitals)
原子轨道函数线性组合
orbiting satellites carrying amateur radio
业余无线电用轨道卫星
conical rail bond pi
圆锥形钢轨导接线塞钉
"On the trolley lines?"
“在有轨电车线路上吗？
rail bond resistance tester
钢轨导接线电阻测试器
failure envelope
破坏包络线断裂点轨迹
The locus of the centers of curvature of a given curve.
渐屈线一给定曲线率中心的轨迹
The median line in the trajectory of fire of an artillery piece.
中线一门大炮开火的轨迹中线
Deviating from a circular form or path, as in an elliptical orbit.
偏离轨道运行的偏离圆周轨道或路线，如椭圆轨道
Smoothing of trajectory imply that linear dynamical system is stochastic trajectory modeling.
轨迹平滑体现了线性动态系统的轨迹建模思想。
Research on Straight Switch for Continuously Welded Rail in Urban Rail Transit;
城市轨道交通直线尖轨道岔无缝化研究
Track-laying scheme cost analysis of main line viaducts of rail transit;
轨道交通正线高架桥铺轨方案及费用分析
