sys·tal·tic /sɪsˈtɔltɪk, ˈtæl-/ (a.)交替收縮和膨脹動作的,心臟收縮的
Sys·tal·tic a. Physiol. Capable of, or taking place by, alternate contraction and dilatation; as, the systaltic action of the heart. ◄ ►