free laser oscillation自由激光振荡
free bubble oscillation自由气泡振荡
free-oscillation自由振荡
free damping oscillation vibrometer自由衰减振荡示振仪
free attenuation oscillation衰减振荡计数法
free decay oscillation method自由衰减振动法
free bubble oscillation theory自由气泡振荡理论
earth's free torsional oscillation地球环型振荡
free oscillation problems自由振动问题