资料来源 : pyDict

交替收缩和膨胀动作的,心脏收缩的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Systaltic \Sys*tal"tic\, a. [L. systalticus drawing together,
   Gr. ?, from ? to draw together. Cf. {Sustaltic}, {Systole}.]
   (Physiol.)
   Capable of, or taking place by, alternate contraction and
   dilatation; as, the systaltic action of the heart.