单位向量 dānwèixiàngliàng unit vector Definitions Defs Origin Strokes Stroke Words Sentences Sents 单位 單位 dānwèi noun unit of measurement A standard quantity used for measuring things, such as distance, weight, or time向量 xiàngliàng vector (math) a quantity having direction as well as magnitude, such as force or velocity; also called 矢量 shǐliàng
