柯林斯词典scalar /ˈskeɪlə/ 1. N a quantity, such as time or temperature, that has magnitude but not direction 标量→compare vector ,pseudoscalar ,pseudovector 2. ADJ having magnitude but not direction 标量的 返回 scalar剑桥词典something that has size but no direction , such as a quantity , distance , speed , or temperature 标量的（只有大小没有方向的，如数量、距离、速度或温度） 比较vector 返回 scalar