diastasis
  心舒張後期
  di·as·ta·sis /daɪˈæstəsəs/ 名詞
  舒張末期,分離,脫離
  Di·as·ta·sis n.  Surg. A forcible separation of bones without fracture.
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  diastasis
       n : separation of an epiphysis from the long bone to which it is
           normally attached without fracture of the bone
       [also: diastases (pl)]