四阶方程 fourth-order equation 二次方程 binomial equation; quadratic equation; quadraticequation; quadric equation ..
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fourth order parabolic equation 四阶抛物方程
fourth order diffusion equation 四阶扩散方程
fourth-order elliptic equation 四阶椭圆方程
fourth order elliptic equation 四阶椭圆方程
fourth-order wave equation 四阶波动方程
fourth order wave equation 四阶波动方程
fourth-order difference equation 四阶常微分方程
By some abstract results of operator equation, the fourth order singular boundary value problem was discussed.
利用算子方程的一些抽象结果来讨论四阶奇异边值问题。
In this paper, the initial-boundary value problem of a kind of nonlinear fourth-order wave equations with damping and source terms is studied on the base of Beam equation.
本文在梁方程的基础上研究了一类具有非线性阻尼项和力源项的四阶波动方程的初边值问题。
The initial boundary value problem of fourth order wave equation with dispersive and dissipative terms is studied.
研究具色散和耗散项的四阶波动方程的初边值问题。
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