...二阶动力方程 second order dynamic equations 二阶微分方程组 orderdifferentialsystem ; second-orderdifferentialsystem 简单二阶微分方程 simple second order differential equation ..
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斜拉索的粘性剪切型阻尼器减振设计需要求解二阶微分方程组，计算工作量很大。
The differential equations with two degree have to be solved for designing viscous shear damper that is used to reduce the vibration of cables of cable stayed bridge.
用孤立不变集和孤立块的概念，给出了含一个参数的二阶常微分方程组的非驻定有界解分支点的存在性准则。
Using concepts of invariable set and isolated cube, we obtained existence for bifurcate points of bounded solutions of second order ordinary differential systems including a parameter.
本文主要运用锥不动点定理和格林函数研究二阶非线性常微分方程组正解的存在性。
In this paper, we study the existence of positive solutions to second - order nonlinear ordinary differential equations by using fixed point theorem in cones and Green's function.
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