HomeDictionary单位切向量单位切向量Word(math.) unit tangent vectorTraditional單位切向量Copy worddān wèi qiē xiàng liàngdan1wei4qie1xiang4liang4Hear itMeaning(math.) unit tangent vector CC-CEDICTCharacters in 单位切向量单dān位wèi切qiè向xiàng量liàng