Through dynamic force condensing, the dynamic matrix of mega-frame is simplified, and corresponding oscillatory differential equation is obtained.

并对在该模型下建立的动力矩阵用动力凝聚法进行简化，推导了相应的振动微分方程。

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In this paper, we consider the oscillatory properties of neutral linear variable functional differential equation with piecewise constant delays.

本文研究分段常数变量线性中立型泛函微分方程的振动性。

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To study the oscillatory of solutions to a class of nonlinear neutral hyperbolic differential equation with continuous distributed delay.

研究一类具有连续分布滞量的非线性中立型双曲方程解的振动性质。

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