The conversion formula between the polar angle and the generating angle and calculating steps during measuring the gear involute error by the polar coordinate measuring method are presented. 给出了极坐标法测量齿形误差时极角(PA)与展角的转换公式和计算步骤,并对以极角(PA)和展角表示的齿形误差曲线进行了对比。
Radius and orbital velocities can be directly expressed as functions of time or polar angle, which is helpful for designing flight mission and motion trajectory. 这种方法可直接获得向径、轨道速度等参数随时间或极角(PA)(绕地心的转动角)的变化,便于分析轨道转移与逃逸运动,有助于飞行使命与运动轨迹的设计。
Algorithm of Constructing Convex Hull for Plant Leaf Based on Bidirectional Polar Angle(PA) 基于双向极角(PA)的植物叶凸包生成算法
Dynamic Signature Verification Algorithm Based on Polar Angle(PA) Matching 基于极角(PA)特征匹配的动态签名鉴别算法
The Dirac energy level in Kinnersley space has something to do with polar angle. Kinnersley时空中的Dirac能级分布与极角(PA)θ有关。