曲线系是指具有某种共同性质的曲线的集 .曲线系方程的形式通常表现为含有一个或几个独立参数的二元方程 .利用曲线系方程解题体现了参数变换的数学思想、整体处理的解题策略、以及待定系数法等重要的解题方法 .这种思想、策略、方法的三位一体 ,常能使解题的水平更高 ,思维更 Curvilinear systems are sets of curves that have some common properties. The form of a curve system equation is usually expressed as a binary equation that contains one or more independent parameters. Solving a problem using a curvilinear equation solves the mathematics of parametric transformation and the overall processing. The problem-solving strategy and the undetermined coefficient method and other important problem-solving methods. The trinity of such ideas, strategies, and methods can often lead to higher levels of problem solving and thinking.