随意收缩

【医】 voluntary contraction

随意的英语翻译：

ad libitum; as one please; at discretion; at will; liberty; random; unbending
【计】 don't care
【医】 ad lib.; ad libitum

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