succussion
  振盪法; 振盪音
  suc·cus·sion /səˈkəʃən/ 名詞
  振盪(法),振盪音
  Suc·cus·sion n.  The act of shaking; a shake; esp. Med., a shaking of the body to ascertain if there be a liquid in the thorax.
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  succussion
       n : shaking a person to determine whether a large amount of
           liquid is present in a body cavity