模型的参数主要受生育期平均气温制约。

The parameters of the model are mainly controlled by average air temperature.

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提出了可用度最大和平均维修费用最低的两种维修间隔期模型，采用专家评分的方式确定二者的重要度，通过计算得出最佳维修间隔期。

Two maintenance interval models with maximum availability and average cost are proposed, and the importance of the two is determined by the way of expert evaluation.

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