The problem is to determine the optimal replacement policy ( N , T )? such that the long-run expected cost per unit time is minimized.
利用几何过程，以系统大修次数N和大修时间间隔T为更换策略，选择最优策略（ N ， T）使系统经长期运行单位时间的期望费用最小。
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.
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。
Cutter punch for Air Nibbler This Replacement punch fits the (11899) Air Nibbler. It is desirable to replace the punch and die to restore optimal performance.
切割打孔的空气步冲轮廓机这是用于替换适用于(11899)的空气步冲轮廓机。它是恢复和替代打孔最佳的性能。
Using the property of Markov at the points of replacement period, a model of determining the optimal period is developed with objective of maximizing the mean time to first failure of system.
利用在更换周期点上具有的马尔可夫性质，以系统首次故障前平均工作时间最大为目标建立了确定最佳更换周期的模型。
The optimal scheme was ascertained as flows: alkaline wash-diluted hydrochloric acid activation-acidic copper plating-replacement silver plating.
确定了最佳方案：碱洗—稀盐酸活化—酸性镀铜—置换法镀银。
Peritoneal dialysis is confirmed safe and effective, and should be the optimal method as renal replacement therapy for end-stage diabetic nephropathy patients.
腹膜透析治疗对终末期糖尿病肾病患者是安全有效的，并可作为该病肾脏替代治疗的首选方法。
Under simple random sampling scheme without replacement and unknown proportion of population possessing neutral attribute, the optimal allocation of sizes of two sub-samples is given.
对简单随机不放回抽样，在总体非敏感属性个体比例未知的情况下，给出了两个子样本容量的最优配置。
Under simple random sampling scheme without replacement and unknown proportion of population possessing neutral attribute, the optimal allocation of sizes of two sub-samples is given.
对简单随机不放回抽样，在总体非敏感属性个体比例未知的情况下，给出了两个子样本容量的最优配置。
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