文摘:本文用插值摄动法及改进的L-P法相结合的方法求解了一类有阻尼的强非线性自由振动问题，得到了一级近似解。
自由振荡
free oscillation
暂无补充释义。
相关例句
相关词条
frost-free period
free-trade port，free port
free and easy
by-pass check valve (free-wheeled checkvalve)
by-pass check valve (free-wheeled check valve)
boost qi4 and free yang2
six bowels fulfill their purposes when there is free flow
free from chlorine