San Francisco's Public Utilities Commission knows the exact co-ordinatesd of every waste-water pump, its maintenance history and the likelihood of it failing.

圣弗朗西斯科的公共事业委员会清楚每条废水管道的精确坐标，维修记录，和出现故障的可能性。

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Therefore, the maintenance of a reliable water pump is the first issues to consider.

因此，水泵机组的可靠维修性是首先要考虑的问题。

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It is an important task to increase efficiency of systems and installation freedom between wind turbine and water pump and reduce maintenance for wind pumping systems.

提高小型提水风力机的效率，减少系统的维护量，增加风力机安装位置与水泵安装位置之间的自由度是推广利用风能提水的一项重要工作。

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The Pentagon report concluded that KBR failed to ground a water pump at the building, and the company did not report improperly grounded equipment during routine maintenance.

CNN: Take back KBR bonuses, senators urge Pentagon