认为运用灰色预测模型来估计可修复系统的故障时刻，不必假定系统的随机过程模型。
It is not necessary to assume the concrete stochastic process model for a repairable system when we estimate the failure hour by means of the grey forecasting model.
在假定故障部件不能“修复如新”的条件下，基于几何过程模型研究可修串联系统的最优更换策略。
An optimal replacement policy for series repairable system is studied assuming that the component after repair is not "as good as new" by using the geometric process model.
本文将圆柱齿轮减速器看作一个由不可修复零件组成，具有多种故障的可修复系统。
In this paper, the cylindrical gear decelerator is regarded as a repairable system for many faults containing some unrepairable elements.
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