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分析了多级齿轮装置热网络模型的建立方法，包括：机械结构的离散、网络的拓扑结构与数学描述．仿真与实验表明，模型可以准确地模拟减速器的热特性．
The establishment method of thermal network model of multi-stage gear unit is analyzed, including the discrete of mechanical structure, the topological structure and mathematical description of the network. Simulation and experiment show that the model can accurately simulate the thermal characteristics of reducer.