third-order differential system
third-order differential system
三阶微分系统
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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By the discretization of spatial variable in the equation, a third-order differential system of equations containing periodic time-varying coefficient is derived.
采用微分求积法对方程中的空间变量进行离散，得到仅含有时间变量的三阶周期系数微分方程组。
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