Easy availability of spare parts for maintenance at minimum cost.
容易获得的零部件维修最低的成本。
In the economic point of view, the maintenance methods not only satisfy the minimum cost but also satisfy the minimum safe index.
从经济的观点要求维护方法的费用最小，同时还应满足最小的安全指标。
Optimal maintenance scheduling of components, traction substations and catenaries is formulated for minimum cost, maximum reliability and both.
设备维修计划可靠性最大模型的约束条件主要为最大维修费用、最小可用度以及运行总时间；
Use the lowest cost and minimum maintenance time, the economy is greatly ahead of the competition.
最低使用成本与最少维修保养时间，经济性大大领先于竞争对手。
Use the lowest cost and minimum maintenance time, the economy is greatly ahead of the competition.
最低使用成本与最少维修保养时间，经济性大大领先于竞争对手。
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