ODE45 Solve differential equations, higher order method.
ode45解决微分方程，高阶的方法。
An improved higher order method was used in calculating the natural frequency of a laminated composite plate because general calculation method was complicated.
针对一般的计算层合板振动特性的方法过于繁复的问题，采用了一种高阶改进方法来计算复合材料层合板的固有频率。
An improved higher order method was used in calculating the natural frequency of a laminated composite plate because general calculation method was complicated.
针对一般的计算层合板振动特性的方法过于繁复的问题，采用了一种高阶改进方法来计算复合材料层合板的固有频率。
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