【醫(yī)】 voluntary contraction

隨意的英語翻譯：

ad libitum; as one please; at discretion; at will; liberty; random; unbending
【計】 don't care
【醫(yī)】 ad lib.; ad libitum

收縮的英語翻譯：

shrink; contract; draw back; pinch; constriction; constringency; shrinkage
【化】 shrinkage
【醫(yī)】 contract; contraction; systole; Z.; zuckung
【經(jīng)】 contraction