短語詞組短語falling -body viscometer 落躰黏度計free falling body 自由落躰;自由落躰類falling body motion 落躰運動falling body viscometer 落躰粘度計;落躰黏度計acceleration of falling body 落躰加速度falling body absolute gravimeter 落躰式絕對重力儀falling body in shaft 井內(nèi)墜物 返回 falling body