东风波周期振荡
Periodic oscillations of easterly flow
倍周期振荡
Doubling-periodic oscillations
壁面展向周期振动
spanwise wall oscillation
长周期振荡
long periodic oscillation
long-period reverberation
殆周期振荡
almost periodic oscillation
非线性的周期振动
nonlinear periodic vibration
非线性周期振动
nonlinear periodic oscillation
non-linear periodic oscillation
nonlinearly periodic oscillation
non-linear vibration