composition decay curve
Decay curve
衰减曲线
衰变曲线
衰减谱
余辉曲线
减缩曲线
衰减特性
衰﹝蜕﹞变曲线
decay curve acquisition system
Radioactive-decay curve
curve-curve intersection
transition curve；easement curve；spiral transition curve
a sound mind in a sound body
infra-audible sound (=infrasonic sound)
rate of sound and attenuation of sound
sound absorption-sound insulation-vibration isolation technology
sound intensity and sound intensity level