circular interpolation meaning in English

圆弧插补
圆弧插值法

The conventional linear and circular interpolation in cartesian ( rectangular ) coordinates were supplemented by polar coordinates and helical interpolation
传统的笛卡尔的线形和环形内插法结合被极坐标和螺旋插补所补充。
It builds a relative coordinates based on the jumping - off point of circular interpolation as its origin , caculates the sine and cosine of the angle formed by x axis and the line which connects the origin and the centre of the circle , then gets the coordinates of the centre in the relative coordinates , and enduces a uniform fomula , which is easy to program in computer
摘要用圆弧插补起点作为相对坐标系原点，连接圆弧起点和圆心，求出该连接线和相对坐标x轴的夹角的正余弦值，由此解出圆心在相对坐标系的坐标，并得到一个统一的计算公式，易于计算机编程实现。