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三阶微分
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  three order differential
     The Dynamics of Varying Accelerated Motion and the Three Order Differential Equation
     变加速动力学和三阶微分方程
短句来源
     Through constructing upper and lower solution and Nagumos condition,consider the differential inequalities and existence for three order differential equation with three point value problem.
     通过上下解的构造及Nagumo条件,研究三阶微分方程三点边值问题的微分不等式及解的存在性;
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  “三阶微分”译为未确定词的双语例句
     Liapunov-type Inequality for Differential Equations of Order Three
     三阶微分方程的Liapunov型不等式
短句来源
     The Nonlinear Three Point Boundary Value Problem of Third Order Differential Equations
     三阶微分方程的非线性三点边值问题
短句来源
     Upper and lower solutions method is used to establish some existence results of solution and positive solution to the following third order boundary value problem u(t)+f(t,u)=0(0≤t≤1),u(0)=u(1)=u″(0)=0,where f satisfies some growth conditions on finite interval and infinite interval respectively.
     利用上下解方法 ,分别讨论了当f∶[0 ,1 ]×R→R在有限区间和无限区间上满足某些增长性条件时 ,三阶微分方程边值问题u (t) +f(t,u) =0 ,u(0 ) =u(1 ) =u″(0 ) =0解与正解的存在性 .
短句来源
     MULTIPLE BOUNDARY LAYER PHENOMENA OF SOLUTION OF BOUNDARY VALUE PROBLEM FOR THIRD ORDER DIFFERENTIAL EQUATION WITH BOUNDARY PERTURBATION
     伴有边界摄动的三阶微分方程边值问题解的多重边界层现象
短句来源
     In order to compute bulging of wide face of continuous cast slab, it is necessary to solve a third order differental equation for creep or a second order one for elastoplastic deformation.
     连铸板坯宽面鼓肚对铸坯中心偏析和裂纹有较大影响,为计算板坯宽面鼓肚,按蠕变规律,需解一个三阶微分方程,按弹塑性规律,需解一个二阶微分方程,十分费时。
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  相似匹配句对
     ON THE STABILITY OF NONAUTONOMOUS DIFFERENTIAL EQUATIONS OF THIRD ORDER
     非自治微分方程的稳定性
短句来源
     On the Stability of Solutions of Some Third Order Differential Equations
     微分方程解的稳定性
短句来源
     Periodic Solutions of a Third Order Differential Equations
     非线性微分方程的周期解
短句来源
     Liapunov-type Inequality for Differential Equations of Order Three
     微分方程的Liapunov型不等式
短句来源
     The Dynamics of Varying Accelerated Motion and the Three Order Differential Equation
     变加速动力学和微分方程
短句来源
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  three order differential
Growth of solutions of three order differential equations
      
Three order differential scheme is used in the computation of convection term and two layers turbulence model are employed in the calculation.
      


The pupil reflex to light may be treated as a feedback process to control the light impinging upon the retina. By means of an infrared TV equipment, the pupil area changes were measured as system response to the input of light pulses with various waveforms. The results showed that the dynamic characteristics of pupillary system is quite nonlinear, the pupil system behaves like a positive differential detector. A third order differential equation can be formulated to simulate this dynamic characteristic. The...

The pupil reflex to light may be treated as a feedback process to control the light impinging upon the retina. By means of an infrared TV equipment, the pupil area changes were measured as system response to the input of light pulses with various waveforms. The results showed that the dynamic characteristics of pupillary system is quite nonlinear, the pupil system behaves like a positive differential detector. A third order differential equation can be formulated to simulate this dynamic characteristic. The meaning of the model was discussed briefly.

瞳孔对光反应可以看成是一个反馈控制过程,它自动调节投射到视网膜上的光量,对这个较简单的生物闭环系统的研究,有利于进一步探讨各种更复杂的生物控制系统. 本文是应用专用的红外线电视设备,以不同波形的可见光脉冲作为输入信号,对瞳孔控制系统的反应即瞳孔面积的变化进行了多次测量.实验结果表明系统的动态特性是非线性的,它具有正微商检测器特性。且可用一个三阶微分方程来模拟瞳孔控制系统的动态过程,并对此作了初步讨论。

This paper describes the basic principle and apparatus of CO2 laser stabilized by saturated resonance with 4.3 μm fluorescence. The linewidth and resonant depth of the Lamb dip have been measured. The relationships between derivative signals (1st and 3rd) and the modulated bandwidth as well as the temperature of the absorbing cell are determined by experiment. The beat-counting measurement results show that the frequency stability of CO2 laser is 2×10-10 (10s) and the reproducibi-lity is better than 1×10-9.

本文描述利用4.3μm荧光饱和共振稳定CO_2激光器频率的基本原理和装置。测量了4.3μm荧光兰姆凹陷的宽度和深度,确定了其一阶、三阶微分信号与调制宽度、吸收室温度等参数的关系。拍频测量结果表明,其频率稳定度为2×10~(-10)(10s),复现性优于1×10~(-9)。

It is the main purpose of this paper to study spatial periodic solutions and chaotic behavior in many parameter families of third-order differential equations. Melnikov's method is used to prove that there exists an attractor for the autonomous perturbed system and that there is complicated dynamical behavior resulting from the smale horseshoe for the periodic perturbed system.

本文研究一类三阶微分方程组的空间周期解与浑沌性质。用Melnikov方法证明了自治扰动系统存在普通吸引子,周期扰动系统存在由Smale马蹄导致的复杂动力学行为。

 
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