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坐标原点 [zuò biāo yuán diǎn]
origin of coordinates
- 通过观测两已知点即可确定一新点的坐标。坐标系为：第一个点作为坐标原点，而第一点到第二点的方向作为N（轴）方向。
Create a new coordinate by measuring to two points. The 1st point becomes the origin and the 2nd point becomes the N axis direction. - 而其实,我们就站在快乐的坐标系原点，快乐就在我们的掌握之中啊!
And we are actually standing in the 0 point of the axis of happiness and happiness is just at hand. - 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。
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.
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