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热误差是加工中心的最大误差源。通过对机床热特性的实验和分析，利用神经网络模型对热误差进行了补偿，取得比较好的效果。
Thermal error is the largest source of error in the machining center. Through the experiment and analysis of the thermal characteristics of the machine tool, the neural network model is used to compensate for the thermal error and achieve better results.