中文说明：
主要是建立考虑温度场与立场耦合下的直齿轮动力学模型。通过龙格库塔法求解，得出一系列的动态特性。
English Description：
The main purpose is to establish the dynamic model of Spur Gear Considering the coupling of temperature field and position. A series of dynamic characteristics are obtained by Runge Kutta method.