Maintenance process model is the base of the research of maintenance support system.

维修过程模型是研究维修保障系统结构与运行的基础。

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Mission dependability is an important index to estimate the capability of maintenance support system.

任务可信性是衡量维修保障系统能力的重要指标。

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The fatigue life of the creeper tread is lacking in the maintenance support system of the self-propelled gun.

履带板的疲劳寿命是自行火炮维修保障体系中急缺的指标。

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The company will continue to deliver free security fixes for the operating system beyond this cutoff date, however maintenance updates will require the purchase of extended support from Microsoft.

ENGADGET: Microsoft extends free Windows Server 2008 support through January 15th, 2015

It marks the fourth long-term support (LTS) release of the world's favourite free operating system, with maintenance updates guaranteed for five years.

ENGADGET: Ubuntu 12.04 LTS Precise Pangolin hits the web, with HUD in tow