短語詞組短語VR Vector speed ratio 曏量速度之乘數(shù)normal vector ratio 法矢比率vector speed -up ratio 曏量加速比t -raio vecor 比例曏量method of ratio vector 比例曏量法equal ratio vector measures 等比曏量測度node voltage increment ratio vector 電壓增量比曏量 返回 vector ratio