说明：  基于Ctia 进行飞机三维模型参数化设计，详细讲述了飞机三维模型参数化设计步骤和方法，具有较高的参考价值
(Catia be based on three-dimensional model airplane parametric design, detailed three-dimensional model of the plane about the parametric design steps and methods, with a high reference value)