Brachistochrone Curve最速曲线;最速降线问题
brachistochrone problem最速降线问题;线问题
problem of brachistochrone最速降线的问题;最速降线问题
The brachistochrone problem最速落径问题
brachistochrone with bounded curvature界曲率最速降线
N（名词） the curve between two points through which a body moves under the force of gravity in a shorter time than for any other curve; the path of quickest descent 最速降线 [maths]