柯林斯词典scalar /ˈskeɪlə/ 1. N a quantity, such as time or temperature, that has magnitude but not direction 標量→compare vector ,pseudoscalar ,pseudovector 2. ADJ having magnitude but not direction 標量的 返回 scalar剑桥词典something that has size but no direction , such as a quantity , distance , speed , or temperature 標量的（衹有大小沒有方曏的，如數量、距離、速度或溫度） 比較vector 返回 scalar