tangentiala. 切線的、相切的、正切的、離題的、扯遠的學術名詞切向速度:力學切線加速度:航空太空正切的:礦物學切線方向的:礦物學水平的:礦物學英文釋義of superficial relevance if anyof or relating to or acting along or in the direction of a tangent