振荡法; 振荡音
Succussion \Suc*cus"sion\, n. [L. succussio, from succutere: cf. F. succussion. See {Succussation}.] The act of shaking; a shake; esp. (Med.), a shaking of the body to ascertain if there be a liquid in the thorax.
succussion n : shaking a person to determine whether a large amount of liquid is present in a body cavity