The angular coordinate used a DVR based on Legendre polynomials and the radial coordinates utilized a DVR based on sine basis functions.
角度部分的DVR基组选择勒让德多项式形式，而径向坐标采用正弦函数形式。
2
The radial symmetry of this shape helps to coordinate the communication and circulation between different sections of the museum and its other facilities.
这种呈放射性径向对称的形状有助于博物馆和其他设施之间的沟通和协调。
3
Using the concepts of radial velocity and transversal velocity in polar coordinate system, a problem of pursuant trajectory in kinematics is solved.