单位切向量 Save Sign in to save words Traditional (Taiwan): 單位切向量 dānwèiqiēxiàngliàng ㄉㄢ ㄨㄟˋ ㄑㄧㄝ ㄒㄧㄤˋ ㄌㄧㄤˋ unit tangent vector math. Character by character 单(dān)bill 位(wèi)position 切(qiē)cut 向(xiàng)surname Xiang 量(liàng)capacity A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0