求翻译：本文把搜寻飞机分为三个阶段。我们针对飞机失事后坠落轨迹进行研究，分别建立了飞机在水中和空中的动力学模型，并在 中求解出飞机坠落轨迹的微分方程的数值解，并画出了坠落轨迹图。是什么意思？

In this paper, the search aircraft divided into three stages .

This document to search for aircraft is divided into 3 phases. We have to crash, when it crashed the trackball to study, respectively, for the aircraft in the water and air of the dynamics model, and in the solver for the plane crash track of differential equation of value, and the fall track.

This article searches for the airplane to divide into three stages.After we crash the path the aircraft accident to conduct the research, has established the airplane separately in the water neutral airborne dynamics model, and solves the airplane in to crash the path differential equation numerical

This paper is divided into three stages of search aircraft. Following a plane crash, we study the fall trajectory, namely establishing dynamic model of the plane in the water and in the air and solve plane crash track in the numerical solution of differential equations, and draw the fall trajectory.

正在翻译，请等待...