短語詞組短語beam in vibration 梁振動(dòng)beam type vibration frequency 梁型振動(dòng)頻率beam vibration theory 梁振動(dòng)理論beam vibration equations 梁的振動(dòng)方程beam -plate vibration 自由振動(dòng)solving beam vibration equations 解梁振動(dòng)方程nonlinear beam vibration equations 非線性梁振動(dòng)方程beam vibration equation 梁橫振動(dòng)方程beam vibration eigenfunctions 梁振動(dòng)特征函數(shù) 返回 beam vibration