期外收缩

期的英语翻译：

a period of time; expect; sheduled time
【化】 term
【医】 period; phase; stadia; stadium; stage; time
【经】 term

外的英语翻译：

besides; in addition; not closely related; other; outer; outside; unofficial
【医】 ec-; ecto-; exo-; extra-; xeno-

收缩的英语翻译：

shrink; contract; draw back; pinch; constriction; constringency; shrinkage
【化】 shrinkage
【医】 contract; contraction; systole; Z.; zuckung
【经】 contraction