主法向量 zhǔ fǎxiàngliàng
          
              zhǔ fǎxiàngliàng 
              
              set phrase 
              principal normal vector (to a space curve) 
              Domain: Modern Chinese 现代汉语
              
                , Subdomain:  
              
              
                , Concept:  
              
              
              
                Notes: (CC-CEDICT '主法向量')