The characteristics of eddy current retarder were analyzed at low and high velocity respectively. A selecting method for switch point between mathematical model and neural network was proposed.

分析了电涡流缓速器的输出制动力矩在低、高速时的特性，提出了数学模型与神经网络模型切换点的选择方法。

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The key point of this method is to find out the item which is of low mean value but of high relative coefficient, which will provide basis of decision making for later training.

利用四象限分析法处理培训评估调查数据，其核心思想是找出那些均值低但相关系数高的评价项，为以后的培训决策提供依据。

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The appliance of the two-point multi-section method to infrared multi-band camera showed that the method has the merit of low operation load, high precision and strong practicability.

在红外多谱段相机上的应用结果表明二点多段非均匀性校正算法具有运算量小、精度高、实用性强的优点。

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