Parametric instability or resonance is more dangerous than ordinary resonance as it is characterized by exponential growth of the response amplitudes even in the presence of damping.
参数不稳定或共振比普通共鸣，因为它是由具有危险反应指数增长幅度甚至在阻尼的存在。
2
The result displays that the horizontal steady-state vibration is little affected by vertical Chulomb dampingparametric excitations.
结果表明，竖向阻尼参激对水平稳态振动的影响不大。
3
The result displays that the horizontal steady-sta te vibration is little affected by vertical Coulomb dampingparametric excitations.