The department introduced a online repair technology can repair damaged side carbon block, which has the important significance to extending the pot life and reduce the overhaul cost.

本文介绍了一种侧部炭块在线修理技术，可在线修补侧部炭块破损，对于延长槽寿命以及降低大修费用有着重要的意义。

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By applying the theory of reliability to the analysis of the life distribution and operating cost of car axle, the model of economical policy decision about repair cycle of car axle is set up.

通过对车轴寿命分布及其运用成本的分析，运用可靠性理论建立了车轴检修周期经济决策模型。

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So, formulating standards for repairing used oil tubes is the fundamental approach to improving repair quality to extend the service life of tubes and reduce the cost of oilfield production.

指出，制定旧油管检修标准，是提高检修质量，延长作业周期，降低作业费用，确保油田生产的根本途径。

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The department said the cranes had already exceeded their working life and continuing to repair them would be almost impossible at a viable cost.

BBC: Guernsey States asked to fund new harbour cranes