The boats are animated on a pathcurve using a dummy.
飞船使用虚拟动画做出一个曲线运动。
2
If the section is a circular arc in the spatial slanting plane, the circular arc is the extremely reasonable bore hole pathcurve for slide drilling in minimum curvature method.
在此方法中，假设井段是空间斜平面上的圆弧，对于滑动钻进方式，圆弧是非常合理的井眼轨迹曲线。
3
P1 If we have a curve c, from a point p0 to a point p1 then the line integral for work depends only on the end points and not on the actual path we chose.