短語詞組短語momentum flow vector 動量流曏量momentum m vector 動量矢量momentum energy vector 動能矢量momentum energy vector detail 動能矢量orbital angular momentum vector 軌道角動量矢量;軌道動量矩矢量Orbital momentum vector 角動量orbital l angular momentum vector 軌道角動量矢量vector momentum 曏量動量 返回 momentum vector