PFM推挽衰减振荡
PFM push-and-pull attenuate resonance
PL衰减
decay of photoluminescence
P波衰减因子
P wave attenuation factor
暴雨衰减指数
rainstorm attenuation index
产量衰减曲线
production decrement curve
超声波衰减系数
ultrasonic wave attenuation coefficient
超声衰减的强度
intensity of ultrasonic damping
垂直衰减的波动
Perpendicular propagation of internal waves