The minimal objective function which included system cost, maintenanceandrepair costs and loss expectation was established.
构建以系统成本造价、维护维修费用和失效损失期望之和为最小的目标函数。
2
Improvements in design, materials and manufacturing mean that today's vehicles can be operated safely longer than ever, albeit at the cost of continuous maintenanceandrepair.
Lack of maintenance inevitably leads to something big breaking and that will cost you a lot more to repair than it would have cost to make small, ongoing investments in regular maintenance.