Using the secondorderperturbation theory, the formulae of vibrational force constants are derived in part one.
运用二阶微扰理论,本文第一部分首先计算了高阶力常数的表达式。
2
The frequency stability, amplitude stability and harmonic content can be deduced from the secondorderperturbation solution of that equation.
方程的二阶近似解显示出非线性效应对振荡频率稳定度、振幅稳定度及波形正弦纯度的影响。
3
The secondorderperturbation solution for the flow of power-law fluid in stillness a helical pipe is obtained with curvature and torsion as small parameter.