将所有参数代入优化模型，计算了预防性维修的最优周期。

All the parameters are taken to the optimized model, and the best periods of the preventive maintenance was obtained.

youdao

将所有参数代入优化模型，计算了预防性维修的最优周期。

All the parameters are taken to the optimized model, and the best periods of the preventive maintenance was obtained.

youdao